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Historical Locations Within Illinois

Jan 22, 2016 | References

The cities, townships and places on this page were taken from a variety of sources listed below and combined together to create this gazetteer of locations within Illinois.

1 – US 1895 Atlas.
2 – USGS Geographic Names Information Systems.
3 – A Gazetteer of the States of Illinois and Missouri, Beck, Lewis C., A.M., Albany: Printed by Charles R. and George Webster, 1823.
4 – A Complete Pronouncing Gazetteer or Geographical Dictionary of the World, Thomas, J., MD, and Baldwin, T., Editors. Philadelphia: J. B. Lippincott & Co., 1857.
5 – A Gazetteer of Illinois, Peck, J. M. Philadelphia: Grigg & Elliot, 9 North Fourth Street, 1837.

Please note: Cities or Towns may appear in more than one county due to boundary line changes.

Name (& Source)	County	Notes aka twp
Abbot(t)²	Pope	.
Abingdon^{1, 2}, Abington⁴	Knox	1921 HEI
Abingdon⁴	Lake	a post-village of Lake Co. IL, 4 miles SW of Waukegan and 243 N by E of Springfield
Adair¹	McDonough	.
Adams^{1, 2}	Adams	.
Adams^{1, 2}	Livingston	historical
Adams Corner²	Wabash	.
Addieville^{1, 2}	Washington	.
Addison^{1, 2}	DuPage	aka Dunkley's Grove
Adeline^{1, 2}	Ogle	.
Aden²	Hamilton	.
Adenmoor²	Clark	.
Adrian^{1, 2}	Hancock	.
Advance^{1, 2}	Jasper	.
Aetna/Etna^{1, 2}	Coles	.
Aetna^U	Logan	.
Afolkey^{1, 2}	Stephenson	aka Fountain Creek
Afton Center²	DeKalb	.
Agnew²	Whiteside	aka Rock Island Junction
Ahern²	Kankakee	.
Aiken^{1, 2}	Jo Daviess	.
Aiken's Grove⁵	Ogle	.
Akin^{1, 2}	Franklin	.
Akin Junction²	Franklin	.
Akron^{1, 2}	Peoria	PO closed 1904
Alabama Settlement⁵	Union	.
Aladdin^{1, 2}	Pike	.
Alandale²	Madison	.
Albany^U	Logan	.
Albany^{1, 2}	Whiteside	aka Port Newbury
Albers²	Clinton	.
Albion^{1, 2, 3}	Edwards	aka Edwards Courthouse, English Settlement, New Albion; 1823 Gazetteer
Alda²	Washington	.
Alden^{1, 2}	McHenry	aka Wedgewood
Aldenmoor^{1, 2}	Clark	.
Aldridge^{1, 2}	Union	PO closed 1909
Aledo/Aldeo^{1, 2}	Mercer	aka DeSoto
Alexander¹	Kane	.
Alexander^{1, 2}	Morgan	.
Alexis^{1, 2}	Mercer/Warren	aka Alexandria 1872
Alexis Junction²	Mercer	.
Algonquin^{1, 2}	McHenry	aka Cornishville; Cornish's Ferry; Dennys Ferry; Osceola
Alhambra^{1, 2}	Madison	aka Lowryville
Aliceville²	Henry	.
Allen²	Mason	.
Allen's Corner²	Kane	.
Allen's Prairie⁵	Greene	.
Allen's Springs^{1, 2}	Pope	PO closed 1928
Allendale^{1, 2}	Wabash	aka Armstrong; Timber Settlement; Timberville
Allenton^U	Christian	PO closed 1839
Allentown^U	Christian	Taylorville Twp
Allentown^{1, 2}	Tazewell	PO closed 1931
Allenville^U	Logan	aka Laenna; Chestnut 1873
Allenville^{1, 2}	Moultrie	aka Farlow; Nelson; Nelson Station; Old Nelson
Allerton/Allerton Park¹	Piatt	.
Allerton^{1, 2}	Vermilion/Champaign	aka Broadlands
Allison('s Prairie⁵)¹	Lawrence	aka Christian Settlement
Allright²	Clark	.
Alma^{1, 2}	Marion	aka Grand Mound City; Rantoul
Almora^{1, 2}	Kane	aka Spring Valley; Padell; PO closed 1910
Alonzo²	Iroquois	.
Alorton²	St. Clair	aka Alcoa; Fireworks
Alpha^{1, 2}	Henry	.
Alpine^{1, 2}	Cook	PO closed 1894
Alsey^{1, 2}	Scott	aka Smithfield
Alsip²	Cook	.
Alta^{1, 2}	Peoria	aka Medina
Altamont^{1, 2}	Effingham	.
Altamont²	Madison	.
Altenheim¹	Cook	aka Grover; part of Oak Park
Altic^U	Logan	.
Altmar²	La Salle	.
Alto/Alto Pass²	Union	aka Quetil
Alton^{1, 2, 3}	Madison	aka Lower Alton; Salu; Upper Alton
Alton Junction¹	Madison	aka E. Alton
Alton Summit¹	Madison	.
Altona/Altoona¹	Knox	.
Altorf²	Kankakee	PO closed 1887
Alvan/Alvin^{1, 2}	Vermilion	aka Gilbert; named for Alvan Gilbert
Alworth²	Winnebago	PO closed 1899
Amboy^{1, 2}	Lee	aka Ompoge; Binghampton; E. Dixon
Amenia²	Piatt	aka Allerton Station
Ament Corners²	Kendall	.
America^{1, 2, 3}	Pulaski (was in Alexander Co.)	1823 Gazetteer; PO closed 1931
Ames^{1, 2}	Monroe	PO closed 1907
Amity^{1, 2}	Richland	PO closed 1907
Anchor^{1, 2}	McLean	.
Ancona^{1, 2}	Livingston	.
Andalusia^{1, 2}	Rock Island	aka Clark's Ferry; Pleasant Ridge; Rockport
Anderson⁶	Adams	.
Anderson^{1, 2}	Cass	PO closed 1899
Anderson^{1, 2}	Macoupin	.
Andover^{1, 2}	Henry	.
Andres²	Will	.
Andrew²	Sangamon	.
Anna^{1, 2}	Union	aka Jonesboro Station
Annapolis^{1, 2}	Crawford	.
Annawan^{1, 2}	Henry	.
Anoka³	Grundy	aka Minooka
Antioch^{1, 2}	Lake	.
Antonius¹	Adams	PO closed 1902
Appalokia/Appalonia²	Morgan	historical
Appaloosa West²	Kane	.
Appanoose/Appanooce²	Hancock	aka Niota
Apple Creek Prairie⁵	Greene	.
Apple River/Apple River Fort^{1, 2}	Jo Daviess	aka Apple Creek; Bean's Mound; Elizabeth
Applegate²	Lawrence	.
Appleton^{1, 2}	Knox	PO closed 1931
Aptakisic^{1, 2}	Lake	aka Frillman's Park; PO closed 1904
Arcadia^{1, 2}	Morgan	aka New Lexington; PO closed 1901
Archer²	Sangamon	.
Archie^{1, 2}	Vermilion	PO closed 1896
Archie's Mill^U	Christian	.
Arcola^{1, 2}	Coles then Douglas	aka Okaw
Arden¹	Pike	.
Arenzville^{1, 2, 6}	Cass	aka Arrenzville
Argenta^{1, 2}	Macon	aka Newburgh
Argo^{1, 2, 6}	Carroll	aka Argo Fay; Fay; Fay Station
Argyle^{1, 2}	Boone/Winnebago	aka Kintyre; Scotch Grove; PO closed 1931
Arlington^{1, 2}	Bureau	aka Lost Grove
Arlington Heights^{1, 2}	Cook	aka Dunton
Arlington Heights^{1, 2}	Sangamon	.
Arm of the Grand Prairie⁵	Jefferson	.
Armenia⁶	Carroll	post office
Armington^{1, 2}	Tazewell	aka Hittle's Grove
Armsby²	McHenry	historical
Armstrong^{1, 2}	Vermilion	.
Armstrong⁵	Wabash	post office
Arnold²	Carroll	.
Arnold^{1, 2}	Morgan	PO closed 1931
Aroma/Aroma Park^{1, 2}	Will/Kankakee	aka Waldron 1872
Arpee²	Mercer	PO closed 1903
Arrington²	Wayne	aka Sims
Arrowsmith^{1, 2}	McLean	aka Senex
Arrowsmith's Settlement⁵	Mercer	.
Arthur^{1, 2}	Douglas/Moultrie	.
Ash Grove¹	Iroquois	aka Glenwood; Pitchin; PO closed 1901
Ashdale/Ashdale Junction²	Carroll	.
Ashkum^{1, 2}	Iroquois	.
Ashland^{1, 2, 6}	Cass	.
Ashley^{1, 2}	Washington	.
Ashmore('s Settlement⁵)^{1, 2}	Coles	.
Ashton⁵	Adams	.
Ashton^{1, 2}	Lee	aka Ogle Station
Ashville¹	Schuyler	PO closed 1894
Assumption^{1, 2, 6}	Christian	Assumption Twp
Astoria^{1, 2}	Fulton	aka Washington
Athens^{1, 2}	Greene	aka Athensville
Athens^{1, 2}	Sangamon then Menard	aka Rogers
Athens³	St. Clair	aka Hill's Ferry
Atherton's Settlement⁵	Alexander	.
Atkinson^{1, 2}	Henry	aka Cedar Hill
Atlanta/Atalanta^{1, 2}	Logan	aka New Castle; Xenia; Zenia
Atlas^{1, 2, 5}	Pike	aka Ross Settlement, Rockport; PO closed 1911
Atteberry^U	Logan	.
Atterberry^{1, 2}	Menard	aka Atterbury; Atterbury Station
Attila^{1, 2}	Williamson	aka Poor Do; PO closed 1902
Atwater^{1, 2}	Macoupin	.
Atwood^{1, 2}	Douglas/Piatt	.
Auburn¹	Clark	aka Clark Center
Auburn^{1, 2}	Sangamon	aka Sugar Creek
Augerville²	Champaign	.
Augsburg²	Fayette	PO closed 1904
Augusta^{1, 2}	Hancock	aka Oliver's Settlement
Augusta⁵	Pike	.
Aurora³	Clark	1823 Gazetteer
Aurora²	DuPage	.
Aurora^{1, 2}	Kane	.
Aurora²	Kendall	.
Aurora²	Will	.
Aux Sable²	Grundy	.
Austin²	Cook	aka Austinville, Sand Ridge, Sandy Ridge; PO closed 1900
Aux Sable Township¹³	Grundy	.
Ava^{1, 2}	Jackson	aka Headquarters
Avena^{1, 2}	Fayette	PO closed 1931
Avery¹	Jo Daviess	PO closed 1904
Avery Hill²	St. Clair	.
Averyville²	Peoria	.
Aviston^{1, 2}	Clinton	aka Aviston Station; Hecker; Hull
Avoca²	Livingston	aka McDowell; historical; PO closed 1861
Avon^{1, 2}	Fulton	aka Woodstock; Woodsville
Avondale^{1, 2}	Cook	historical, PO closed 1894
Ayers²	Bond	historical, PO closed 1902
Ayers¹	Champaign	aka Broadlands 1888
Ayers/Ayres Junction¹	Carroll	aka Ayres Siding
Babcock²	Rock Island	.
Babylon^{1, 2}	Fulton	PO closed 1904
Bachelder's Grove⁵	Cook	aka Bremen; Bachelor's Grove
Back Bone (Ridge)⁷	Bureau	.
Baden Baden¹	Bond	aka Millersburg, Pierron; PO closed 1923
Bader(s)^{1, 2}	Schuyler	aka Osceola
Badgley's Settlement⁵	St. Clair	.
Bailey Falls²	La Salle	historical
Bailey's Point⁵	La Salle	aka Tonica
Baileyville^{1, 2}	Stephenson then Ogle	aka Crane's Grove
Bainbridge^{1, 2}	Franklin then Williamson	aka Bainbridge Station; PO closed 1881
Baker^{1, 2}	La Salle	aka Munson; PO closed 1903
Baker¹	McLean	.
Baker's Crossroads²	Williamson	.
Baker's Grove⁵	Ogle	.
Bakers Acres²	Kane	.
Bakers Lane¹	Crawford	.
Bakerville²	Jefferson	.
Bakerville²	Logan	.
Balcom^{1, 2}	Union	.
Bald Bluff/Baldbluff²	Henderson	PO closed 1906
Bald Mound/Baldmound/Ball Mound^{1, 2}	Kane	PO closed 1905
Baldwin^{1, 2}	Randolph	aka Cobb
Baldwin/Baldwin Station¹	Greene	.
Ball¹	White	PO closed 1903
Ballard¹	McLean	PO closed 1931
Ballou²	Will	.
Bancroft Corners²	Lake	.
Bando²	Sangamon	.
Banklick²	Saline	PO closed 1916
Bankstone's Fork	Gallatin	.
Banner^{1, 2}	Fulton	aka Utica
Banning's Settlement⁵	Shelby	.
Bannister¹	Fulton	aka Utica
Bannockburn²	Lake	.
Barbee's Settlement⁵	Crawford	.
Barber's Corners²	DuPage/Will	.
Barclay^{1, 2}	Sangamon	.
Bardolph^{1, 2}	McDonough	aka Randolph, Wolf Grove
Barkis Island²	Mercer	.
Barlow Park²	Vermilion	.
Barn Hill/Barnhill^{1, 2}	Wayne	.
Barnard Mill²	McHenry	historical
Barnes^{1, 2}	McLean	PO closed 1919
Barnett²	Madison	.
Barnett^{1, 2}	Montgomery	PO closed 1931
Barr^{1, 2}	Cook	.
Barr²	Macoupin	aka Barr's Store; PO closed 1905
Barr²	Sangamon	.
Barreville^{1, 2}	McHenry	aka Nunda Station; PO closed 1902
Barrington^{1, 2}	Cook	aka Barrington Station
Barrington Center²	Kane	.
Barrington Hills²	Cook	.
Barrington Hills²	McHenry	.
Barrington Woods²	Cook	.
Barrow^{1, 2}	Greene	PO closed 1931
Barry¹	Pike	aka Barre; Snake Hollow; Worcester
Barstow^{1, 2}	Rock Island	aka Franklin Crossing
Bartelso^{1, 2}	Clinton	.
Bartlett^{1, 2}	Cook	.
Bartlett¹	Peoria	.
Bartlett's Settlement⁵	McDonough	.
Bartley¹	Gallatin	PO closed 1872
Bartonville^{1, 2}	Peoria	.
Barwells¹	Perry	aka Jamestown
Basco^{1, 2}	Hancock	aka Summersett/Somerset
Batavia^{1, 2}	Kane	.
Batavia Junction²	DuPage	.
Batcheldorsville⁵	Coles	.
Batchtown^{1, 2}	Calhoun	aka Batcheldersville; Richwoods
Bates^{1, 2}	Sangamon	aka Schuyler Station; PO closed 1912
Batestown²	Vermilion	.
Bath⁵	Cass	.
Bath^{1, 2}	Mason	.
Baum²	Greene	.
Bauman¹	Adams	PO closed 1902
Bay/Bay City^{1, 2}	Pope	aka Bay; Breckinridge; Bayfield
Bay View Garden²	Woodford	.
Bayle/Bayle City^{1, 2}	Fayette	.
Baylestown²	Macoupin	aka Dorchester
Baylis^{1, 2}	Pike	.
Beach Bluff¹	Wayne	.
Beach Park²	Lake	.
Beach Station²	Lake	.
Beamington²	Sangamon	.
Bear Creek⁵	Gallatin	.
Bear Creek⁵	Montgomery	.
Bear Creek⁵	Sangamon	.
Bear Prairie⁵	Wayne	.
Beard's Mine¹	Sangamon	.
Beardstown^{1, 2, 6}	Cass	.
Bearsdale^{1, 2}	Macon	aka Lickskillit²
Beason^{1, 2}	Logan	.
Beaty²	Fulton	.
Beauchamp/Beaucoup^{1, 2}	Washington	.
Beaucoup Settlement⁵	Jackson	.
Beaver Creek^{1, 2}	Bond	.
Beaverton Crossroads²	Boone	aka Beaverton^{1, 6}
Beaverville^{1, 2}	Iroquois	.
Beckemeyer²	Clinton	.
Beckwith¹	Vermilion	.
Bedford^{1, 2}	Pike	.
Bedford Park²	Cook	.
Bee Creek^{1, 2}	Pike	.
Beech Ridge¹	Alexander	.
Beecher^{1, 2}	Will	.
Beecher City^{1, 2}	Effingham	.
Beechville^{1, 2}	Calhoun	.
Begg's Settlement⁵	Union	.
Belden²	McHenry	.
Belgium²	Vermilion	.
Belgium Row²	Vermilion	.
Belgrade³	Pope	1823 Gazetteer
Belknap¹	Johnson	.
Bell^{1, 2}	Logan	.
Bell Ridge²	Edgar	.
Bell's Grove^U	Christian	Rosamond twp
Bellair/Bell Air^{1, 2}	Crawford	.
Belle Plain¹	Marshall	.
Belle Prairie City^{1, 2}	Hamilton	.
Belle Rive^{1, 2}	Jefferson	.
Bellefountaine⁵	Monroe	.
Belleview (Prairie⁵)^{1, 2}	Calhoun	.
Belleville^{1, 2, 3}	St. Clair	1823 Gazetteer
Bellevue²	Peoria	.
Bellflower^{1, 2}	McLean	.
Bellmont^{1, 2}	Wabash	.
Belltown²	Greene	.
Bellwood²	Cook	.
Belmont²	DuPage	.
Belmont¹	Iroquois	.
Belmont Village²	Madison	.
Beltrees²	Jersey	.
Belvidere^{1, 2}	Boone	.
Beman^{1, 2}	Lawrence	.
Beman's Mill & Settlement⁵	Greene	.
Bement^{1, 2}	Piatt	.
Bender²	Johnson	historical
Benjaminville²	McLean	aka Ben Town, Bentown; historical
Bennett²	Vermilion	.
Bennett Landing²	Union	.
Bennington²	Edwards	.
Bennington⁵	Fulton	post office
Bensenville^{1, 2}	DuPage	.
Benson^{1, 2}	Woodford	.
Bentley/Bently^{1, 2}	Hancock	.
Benton¹⁴	Adams	name changed to Fall Creek in 1850¹⁴
Benton¹	Franklin	.
Benton Park¹	Franklin	.
Benton Station^{1, 2}	Lake	historical
Bentown²	McLean	aka Ben Town, Benjaminville; historical
Benville^{1, 2}	Brown	.
Berdan^{1, 2}	Greene	.
Berger^{1, 2}	Cook	.
Berkeley²	Cook	.
Berkshire⁶	Champaign	post office
Berlin^{1, 2}	Sangamon	.
Bernadotte^{1, 2}	Fulton	historical
Bernice^{1, 2}	Cook	.
Berry^{1, 2}	Sangamon	.
Berry's Settlement⁵	Clinton	.
Berryton Post Office^{1, 2}	Cass	historical
Berryville^{1, 2}	Richland	.
Berryville²	Union	.
Berwick^{1, 2}	Warren	.
Berwyn^{1, 2}	Cook	.
Bessie²	Franklin	.
Bethalto^{1, 2}	Madison	.
Bethany^{1, 2}	Moultrie	.
Bethany⁵	Sangamon	.
Bethel¹⁵	Bond	founded 1816 by Robert & Daniel McCord, aka Augusta and Cottonwood Grove¹⁵
Bethel¹	Jackson	.
Bethel^{1, 2}	Morgan	.
Bethel⁵	St. Clair	.
Bethel²	Vermilion	.
Bethesda⁵	Coles	.
Beverly^{1, 2, 14}	Adams	derived its name from Beverly, MA¹⁴
Beverly Hill¹	Cook	.
Beverly Manor²	Tazewell	.
Beverly Township¹⁴	Adams	.
Bible Grove^{1, 2}	Clay	.
Biddleborn²	Washington	.
Big Bay^{1, 2}	Massac	.
Big Bottom settlement⁵	Alexander	.
Big Cut¹	Carroll	.
Big Foot Prairie^{1, 2}	McHenry	.
Big Grove⁵	Champaign	.
Big Grove⁵	McLean	.
Big Mound Prairie⁵	Wayne	.
Big Neck⁵	Adams	.
Big Neck¹	Adams	post office, historical
Big Prairie^U	Logan	.
Big Rock^{1, 2}	Kane	.
Big Run Acres²	Cook	.
Big Woods²	DuPage	historical
Biggs/Briggs^{1, 2}	Mason	.
Biggsville/Briggsville²	Henderson	.
Big Spring Post Office²	Shelby	historical
Billett^{1, 2}	Lawrence	.
Bingham^{1, 2}	Fayette	.
Binghampton²	Lee	.
Bingman Station²	White	.
Binney²	Madison	.
Binnie Hills²	Kane	.
Binnie Lakes²	Kane	.
Birch Island²	Calhoun	.
Birchwood^{1, 2}	Cook	.
Birds^{1, 2}	Lawrence	.
Birds (Bridge)^{1, 2}	Will	.
Birkbeck^{1, 2}	DeWitt	.
Birkbeck Settlement³	Edwards	1823 Gazetteer
Birkner^{1, 2}	St. Clair	.
Birmingham^{1, 2}	Schuyler	.
Bishop^{1, 2}	Mason	.
Bishop Hill^{1, 2}	Henry	.
Bismarck^{1, 2}	Vermilion	.
Bismark¹	Peoria	.
Bissell²	Sangamon	.
Bixby²	St. Clair	.
Bixby¹	Vermilion	.
Black²	Edwards	.
Black Oak Ridge⁵	Putnam	.
Black Partridge Creek⁵	Tazewell	post office
Blackberry Acres^{1, 2}	Kane	.
Blackberry Woods^{1, 2}	Kane	.
Blackburn¹	Christian	South Fork twp
Blackhawk²	Carroll	.
Blackland²	Macon	.
Blacks^{1, 2}	Adams	.
Blackstone^{1, 2}	Livingston	.
Blaine^{1, 2}	Boone	.
Blair²	Livingston	.
Blair^{1, 2}	Randolph	.
Blairsville^{1, 2}	Hamilton	.
Blairsville^{1, 2}	Williamson	.
Blakes^{1, 2}	La Salle	.
Blanding^{1, 2}	Jo Daviess	.
Blandinsville^{1, 2}	McDonough	.
Block²	Champaign	.
Block House⁵	St. Clair	.
Blodgett^{1, 2}	Will	.
Bloom²	Cook	.
Bloomfield²	Adams	.
Bloomfield²	Edgar	.
Bloomfield^{1, 2}	Johnson	.
Bloomfield²	Scott	.
Blooming Grove⁵	McLean	.
Bloomingdale^{1, 2}	DuPage	.
Bloomingdale^U	Logan	.
Bloomingdale⁵	Tazewell	.
Bloomington^{1, 2}	McLean	.
Bloomington Heights²	McLean	.
Blount¹	Vermilion	.
Blue Grass^{1, 2}	Vermilion	historical
Blue Island^{1, 2}	Cook	.
Blue Mound^U	Christian	Rosamond twp
Blue Mound^{1, 2}	Macon	.
Blue Point^{1, 2}	Effingham	.
Blue Point²	Wayne	.
Blue Ridge^{1, 2}	Piatt	.
Blueville²	Christian	post office⁶
Bluff City²	Fayette	.
Bluff City^{1, 2}	Schuyler	.
Bluff Hall^{1, 2}	Adams	.
Bluff Junction²	Madison	.
Bluff Springs^{1, 2}	Cass	.
Bluffdale⁵	Greene	.
Bluffs^{1, 2}	Scott	.
Bluffside²	St. Clair	.
Bluford^{1, 2}	Jefferson	.
Blyton^{1, 2}	Fulton	post office, historical
Boaz^{1, 2}	Massac	.
Bobtown²	Menard	.
Boden²	Mercer	.
Bodmann²	Piatt	.
Bogota^{1, 2}	Jasper	.
Bohleysville²	St. Clair	.
Bolingbrook²	Will	.
Bolivar^U	Christian	Mt. Auburn twp
Bolive⁵	Sangamon	.
Bolivia^{1, 2}	Christian	Mt. Auburn twp
Bolton^{1, 2}	Stephenson	.
Bon Pas (Bumpau)^{3, 5}	White	1823 Gazetteer
Bon Pas Settlement⁵	Edwards	.
Bond¹	Sangamon	.
Bond's Point^U	Christian	Bear Creek (before 1839 this twp was part of Montgomery Co.); extinct as of 1879
Bondville^{1, 2}	Champaign	.
Bone Gap^{1, 2}	Edwards	.
Bonfield^{1, 2}	Kankakee	.
Bongard²	Champaign	.
Bonnie²	Jefferson	.
Bonnie Valley²	Kane	.
Bonus¹	Boone	.
Boody^{1, 2}	Macon	.
Bookwalter Woods^U	Grundy	.
Boos (Station)^{1, 2}	Jasper	.
Booth/Booths¹	Grundy	RR/Express Office
Boothby²	Franklin	.
Boren^U	Logan	.
Borton (Junction)^{1, 2}	Edgar	.
Boskydell^{1, 2}	Jackson	.
Boston⁵	Shelby	.
Bostwick's Settlement⁵	Montgomery	.
Bottom Settlement⁵	Alexander	.
Bottom Settlement⁵	Union	.
Boulder^{1, 2}	Clinton	.
Boulder Hill²	Kendall	.
Bountyville³	Pike	1823 Gazetteer
Bourbon^{1, 2}	Douglas	.
Bourbonais²	Bureau	historical
Bourbonnais^{1, 2}	Kankakee	.
Bowen^{1, 2}	Hancock	.
Bowes²	Kane	.
Bowes Bend²	Kane	.
Bowlesville^{1, 2}	Gallatin	historical
Bowling Green²	Woodford	historical
Bowman¹	Edgar	.
Bowman²	Jersey	.
Bowmanville^{1, 2}	Cook	.
Bowyer¹	Jersey	.
Boyd^{1, 2}	Jefferson	.
Boyle²	Greene	.
Boyleston^{1, 2}	Wayne	.
Boynton^{1, 2}	Tazewell	.
Braceville^{1, 2}	Grundy	.
Braceville Township¹³	Grundy	.
Bradbury (Station)^{1, 2}	Cumberland	.
Braden^{1, 2}	Hamilton	.
Bradford^{1, 2}	Stark	Osceola twp
Bradford/Bradfordton^{1, 2}	Sangamon	.
Bradley('s Settlement⁵)²	Jackson	historical
Bradley²	Kankakee	.
Bradley¹	Tazewell	.
Braeside²	Cook	.
Braidwood^{1, 2}	Will	.
Brattleville⁵	McDonough	post office
Brayfield¹	Franklin	.
Breckenridge²	Hancock	.
Breckenridge^{1, 2}	Sangamon	.
Breeds^{1, 2}	Fulton	.
Breese^{1, 2}	Clinton	.
Bremen^{1, 2}	Jo Daviess	.
Bremen^{1, 2}	Randolph	.
Brereton²	Fulton	.
Brewersville⁶	Bureau	.
Briar Bluff^{1, 2}	Henry	.
Briar Gate²	Kane	.
Briar Hill¹	Kane	.
Briar Hill^{1, 2}	St. Clair	.
Briarwood²	Ogle	.
Bridge's Settlement⁵	Johnson	.
Bridgeport⁷	Cook	.
Bridgeport²	Knox	historical
Bridgeport^{1, 2}	Lawrence	.
Bridgeport^{1, 2}	Scott	historical
Bridgeview²	Cook	.
Bridgeway Addition²	Rock Island	.
Bridgewater³	Monroe	1823 Gazetteer
Briergate²	Lake	.
Briggs Landing^{1, 2}	Schuyler	.
Brighton^{1, 2}	Macoupin	.
Brimfield^{1, 2}	Peoria	.
Brinksburg²	Jo Daviess	historical
Brisbane^{1, 2}	Will	.
Bristol²	Effingham	historical
Bristol^{1, 2}	Kendall	.
Broadlands^{1, 2}	Champaign	.
Broadmoor^{1, 2}	Marshall	.
Broadview²	Cook	.
Broadwell^{1, 2}	Logan	.
Brockett's Settlement⁵	Effingham	.
Brocton^{1, 2}	Edgar	.
Brokaw^{1, 2}	McLean	.
Bronson²	Vermilion	.
Brookfield²	Cook	.
Brooklyn^{1, 2}	Schuyler	.
Brooklyn^{2, 5}	St. Clair	.
Brookport²	Massac	.
Brooks⁶	Calhoun	post office
Brooks^{1, 2}	Madison	.
Brookside²	Kane	.
Brookville²	Jasper	.
Brookville^{1, 2}	Ogle	.
Brookville²	Vermilion	.
Brothers²	Vermilion	.
Broughton^{1, 2}	Hamilton	.
Brown's Point⁵	Morgan	.
Brownfield²	Pope	.
Browning^{1, 2}	Schuyler	.
Browns^{1, 2}	Edwards	.
Browns Crossing²	Sangamon	.
Browns Mill²	Stephenson	.
Brownsport²	White	historical
Brownstown^{1, 2}	Fayette	.
Brownsville³	Jackson	1823 Gazetteer
Brownsville^{1, 2}	White	.
Brownton²	Morgan	historical
Brownwood²	Tazewell	.
Brubaker²	Marion	.
Bruce^{1, 2}	Moultrie	.
Brulette's Creek Settlement⁵	Edgar	.
Brush Hill⁵	Cook	post office
Brushy Fork^{1, 2}	Douglas	historical
Brushy Fork⁵	Edgar	.
Brushy Fork⁵	Lawrence	.
Brushy Prairie⁵	Wayne	.
Brussels^{1, 2}	Calhoun	.
Bryant^{1, 2}	Fulton	.
Bryce²	Iroquois	.
Buck-heart Prairie⁵	Fulton	.
Buckeye¹	Stephenson	.
Buckhorn^{1, 2}	Brown	.
Buckhorn Corners²	Stephenson	.
Buckingham^{1, 2}	Kankakee	.
Buckley^{1, 2}	Iroquois	.
Buckner^{1, 2}	Franklin	.
Bucks²	DeWitt	.
Bucktown²	Vermilion	.
Buda¹	Bureau	.
Budd^{1, 2}	Livingston	.
Budgley's Settlement⁵	St. Clair	.
Buena Vista²	Saline	.
Buena Vista^{1, 2}	Stephenson	.
Buffalo^{1, 2, 3}	Sangamon	aka Buffaloe Heart; 1823 Gazetteer
Buffalo Grove^{1, 2}	Cook	.
Buffalo Grove²	Ogle	.
Buffalo Hart^{1, 2}	Sangamon	aka Buffaloe-heart Grove⁵
Buffalo Prairie^{1, 2}	Rock Island	.
Bull Valley²	McHenry	.
Bullard's Prairie⁵	Lawrence	aka Gardner's Prairie⁵
Bulldog Crossing²	Macon	.
Bulpitt^U	Christian	South Fork twp
Buncombe (Settlement⁵)^{1, 2}	Johnson	.
Bungay²	Hamilton	.
Bunje²	Bond	.
Bunker Hill^{1, 2}	Macoupin	.
Bunkum^{1, 2}	St. Clair	.
Burbank²	Cook	.
Bureau^{1, 2}	Bureau	.
Burgess²	Mercer	.
Burgess Township¹⁶	Bond	.
Burke²	Carroll	.
Burksville^{1, 2}	Monroe	.
Burksville Station^{1, 2}	Monroe	.
Burlingame^{1, 2}	Cass	.
Burlington^{1, 2}	Kane	.
Burnett²	Bureau	.
Burnham^{1, 2}	Cook	.
Burning Tree²	Kane	.
Burns²	McLean	.
Burnside²	Cook	.
Burnside^{1, 2}	Hancock	.
Burnside²	Knox	.
Burnside's Settlement⁵	Clinton	aka Irish Settlement⁵
Burnt Prairie^{1, 2}	White	.
Burr Ridge²	DuPage	.
Burrowsville^{1, 2}	Piatt	.
Burt²	Tazewell	.
Burton^{1, 2}	Adams	.
Burton Township¹⁴	Adams	.
Burton View^{1, 2}	Logan	.
Burtons Bridge²	McHenry	.
Busenville²	Vermilion	.
Bush²	Williamson	.
Bushnell^{1, 2}	McDonough	.
Bush's Corners²	Lake	.
Bushton^{1, 2}	Coles	.
Butler^{1, 2}	Montgomery	.
Buzzville²	Mason	.
Bybee^{1, 2}	Fulton	.
Byron⁵	Champaign	.
Byron^{1, 2}	Ogle	.
Cabery^{1, 2}	Ford	.
Cable^{1, 2}	Mercer	.
Cache²	Alexander	.
Cache Lake²	Cook	.
Cadiz²	Hardin	.
Cadwell²	Moultrie	.
Cagwin¹	Kankakee	.
Cahokia^{1, 2, 3}	St. Clair	1823 Gazetteer
Cairo^{1, 2, 3}	Alexander	1823 Gazetteer
Cairo Junction²	Alexander	.
Caldwell²	Tazewell	.
Caledonia⁵	Alexander	.
Caledonia^{1, 2}	Boone	.
Caledonia²	Putnam	historical
Calftown²	Adams	historical
Calhoun^{1, 2}	Richland	.
Calumet^{1, 2}	Cook	.
Calumet City²	Cook	.
Calumet Park²	Cook	.
Calvin^{1, 2}	White	.
Camargo^{1, 2}	Douglas	.
Cambon²	Franklin	.
Cambria²	Williamson	.
Cambridge^{1, 2}	Henry	.
Camden⁵	Greene	.
Camden²	Jersey	.
Camden^U	Logan	.
Camden^{1, 2}	Schuyler	.
Cameron^{1, 2}	Warren	.
Cameron's Settlement⁵	Fulton	.
Camp Algonquin²	McHenry	.
Camp Ground²	Jefferson	.
Camp Grove²	Marshall	.
Camp Grove^{1, 2}	Stark	Penn twp
Camp Latham^U	Logan	.
Camp Logan¹	Lake	.
Camp Point^{1, 2}	Adams	.
Camp Point Township¹⁴	Adams	.
Camp Travis²	Clay	.
Campbell^{1, 2}	Coles	.
Campbell²	Vermilion	.
Campbell²	Wayne	.
Campbell Hill^{1, 2}	Jackson	.
Campbellsburg²	Christian	historical; post office⁶
Campton²	Randolph	.
Campton Pines²	Kane	.
Campus^{1, 2}	Livingston	.
Canaan⁵	Rock Island	post office
Canaan⁵	Shelby	.
Canteen Settlement⁵	Madison	.
Canton^{1, 2}	Fulton	.
Cantrall^{1, 2}	Sangamon	.
Cape au Gris⁵	Calhoun	.
Capitol Oaks²	St. Clair	.
Capron^{1, 2}	Boone	.
Carbon²	St. Clair	.
Carbon Cliff^{1, 2}	Rock Island	.
Carbon Hill²	Grundy	.
Carbondale^{1, 2}	Jackson	.
Cardiff²	Livingston	.
Cardinal Court²	McLean	.
Carle Springs²	DeWitt	.
Carlinville^{1, 2}	Macoupin	.
Carlock^{1, 2}	McLean	.
Carlsburg²	Macoupin	.
Carlyle²	Clinton	.
Carman^{1, 2}	Henderson	.
Carmi^{1, 2}	White	.
Carnahan Station^{1, 2}	Lee	historical
Carol Stream²	DuPage	.
Carolus⁵	Vermilion	post office
Carpenter^{1, 2}	Madison	.
Carpentersville^{1, 2}	Kane	.
Carrier Mills^{1, 2}	Saline	.
Carrollton^{1, 2}	Greene	.
Carter's Settlement⁵	McDonough	.
Carterville^{1, 2}	Williamson	.
Carthage^{1, 2}	Hancock	.
Carthage²	Ogle	.
Cartter²	Marion	.
Cary (Station)^{1, 2}	McHenry	.
Cascade²	Sangamon	.
Casey^{1, 2}	Clark	.
Casey's Prairie⁵	Jefferson	.
Caseyville^{1, 2}	St. Clair	.
Casner^{1, 2}	Macon	.
Caspars^{1, 2}	Washington	.
Cass^{1, 2}	Cass	historical
Cass⁵	Cook	post office
Castle Fin²	Clark	.
Castle Junction²	Rock Island	.
Castleton²	Stark	Penn twp
Castor Post Office²	Wayne	historical
Catfish²	Edgar	historical
Catharine²	La Salle	.
Catlin^{1, 2}	Vermilion	.
Cato⁵	Clay	.
Caton Farm^{1, 2}	Will	.
Cave-in-Rock^{1, 2}	Hardin	.
Cayuga^{1, 2}	Livingston	.
Cazenovia^{1, 2}	Woodford	.
Cedar Bluff^{1, 2}	Johnson	post office, historical
Cedar Bluff²	Pope	historical
Cedar Brook²	Rock Island	.
Cedar Creek⁵	Warren	post office
Cedar Hills²	Williamson	.
Cedar Park²	Madison	.
Cedar Point²	La Salle	.
Cedarville^{1, 2}	Stephenson	.
Center Hill²	Carroll	.
Centerville²	Calhoun	.
Centerville^{1, 2}	Grundy	historical
Centerville²	Knox	.
Centerville²	Macoupin	.
Centerville²	Morgan	.
Centerville^{1, 2}	Piatt	.
Centerville⁵	Schuyler	.
Centerville⁵	Wabash	post office
Centerville²	White	.
Centerville Station²	St. Clair	.
Central²	Kendall	.
Central City²	Grundy	.
Central City^{1, 2}	Marion	.
Central Township¹⁶	Bond	.
Centralia^{1, 2}	Marion	.
Centreville Station^{1, 2}	St. Clair	.
Cereal^{1, 2}	Livingston	.
Cerro Gordo^{1, 2}	Piatt	.
Chadwick¹	Carroll	.
Chalfin Bridge^{1, 2}	Monroe	.
Challacombe^{1, 2}	Macoupin	.
Chambersburg^{1, 2}	Pike	.
Chamness²	Williamson	historical
Champaign^{1, 2, 6}	Champaign	.
Champlin²	Livingston	.
Chana^{1, 2}	Ogle	.
Chandlerville^{1, 2, 6}	Cass	.
Channahon^{1, 2}	Will	.
Channel Lake²	Lake	.
Chapin²	Macon	.
Chapin^{1, 2}	Morgan	.
Chapman^{1, 2}	Montgomery	.
Charity^{1, 2}	Vermilion	historical
Charleston^{1, 2}	Coles	.
Charlotte^{1, 2}	Livingston	.
Charlottsville²	Lawrence	historical
Charter Grove^{1, 2}	DeKalb	.
Chatham^{1, 2}	Sangamon	post office⁵
Chatsworth^{1, 2}	Livingston	.
Chatton^{1, 2}	Adams	.
Chauncey^{1, 2}	Lawrence	.
Chautauqua²	Jersey	.
Chautauqua Park²	Mason	.
Chebanse¹	Iroquois	.
Chebanse²	Kankakee	.
Checkrow²	Fulton	.
Cheltenham Beach^{1, 2}	Cook	.
Chemung^{1, 2}	McHenry	.
Cheneyville^{1, 2}	Vermilion	.
Chenoa^{1, 2}	McLean	.
Cherry²	Bureau	.
Cherry Grove⁵	Jo Daviess	post office⁵
Cherry Grove Settlement⁵	St. Clair	.
Cherry Hill²	Will	.
Cherry Point^{1, 2}	Edgar	.
Cherry Valley^{1, 2}	Winnebago	.
Cheshire Hills¹	Adams	.
Chester^U	Logan	.
Chester^{1, 2}	Randolph	.
Chesterfield^1,2	Macoupin	.
Chestervale^{1, 2}	Logan	.
Chesterville^{1, 2}	Douglas	.
Chestline^{1, 2}	Adams	.
Chestnut^{1, 2}	Logan	.
Cheyney's Grove Settlement⁵	McLean	.
Chicago^{1, 2}	Cook	.
Chicago³	Pike	1823 Gazetteer
Chicago Heights^{1, 2}	Cook	.
Chicago Lawn^{1, 2}	Cook	.
Chicago Ridge²	Cook	.
Chicken Bristle²	Douglas	.
Chickering¹	Grundy	.
Childers Acres²	Ogle	.
Chili^{1, 2}	Hancock	.
Chillicothe^{1, 2}	Peoria	.
Chinatown²	Cook	.
Chinatown²	Madison	.
Chippewa²	Kane	.
Chippewa⁵	Madison	.
Chipps²	Moultrie	.
Chittenden²	Lake	.
Chittyville²	Williamson	.
Choat²	Massac	.
Choctaw²	Clark	.
Choteau's Island⁵	Madison	.
Chrisman^{1, 2}	Edgar	.
Christian Settlement⁵	Lawrence	aka Allison's Prairie
Christopher^{1, 2}	Franklin	.
Christy's Prairie⁵	Lawrence	aka Lewis's Prairie⁵
Churchill²	Bureau	.
Churchville²	DuPage	.
Cimic²	Sangamon	.
Cincinnati²	Wayne	.
Cisco^{1, 2}	Piatt	.
Cisne^{1, 2}	Wayne	.
Cissna Junction^{1, 2}	Iroquois	historical
Cissna Park^{1, 2}	Iroquois	.
Civer^{1, 2}	Fulton	historical
Clank²	Alexander	.
Clare^{1, 2}	DeKalb	.
Claremont^{1, 2}	Richland	.
Clarence^{1, 2}	Ford	.
Clarendon Hills^{1, 2}	DuPage	.
Clarion²	Bureau	.
Clark²	Greene	.
Clark Center^{1, 2}	Clark	.
Clarke City^{1, 2}	Kankakee	.
Clarksburg²	Shelby	.
Clarksdale^{1, 2, 6}	Christian	Bear Creek (pre 1839, twp part of Montgomery Co) twp
Clarksville²	Clark	.
Clarksville²	McLean	.
Clarmin²	Washington	.
Clary's Grove⁵	Sangamon	.
Claus²	Will	.
Clawson's Point^U	Christian	May twp (part of Taylorville & Stonington precincts until 1866); Smith; Howard
Clay^U	Logan	.
Clay City^{1, 2}	Clay	.
Clay Prairie⁵	Clark	.
Claypool²	Grundy	.
Claypool Woods²	Grundy	.
Clays Prairie^{1, 2}	Edgar	.
Claysville²	Sangamon	.
Clayton^{1, 2}	Adams	.
Clayton Township¹⁴	Adams	.
Claytonville^{1, 2}	Iroquois	.
Clear Creek¹	Putnam	.
Clear Creek Landing⁶	Alexander	.
Clear Lake²	Cass	.
Clear Lake²	Sangamon	.
Clearing²	Cook	.
Cleaverville¹¹	Coles	now known as Oakland^1,2,5
Cleburne²	Franklin	.
Clements²	Morgan	.
Clendening's Settlement⁵	Greene	.
Cleone^{1, 2}	Clark	.
Cleveland^{1, 2}	Henry	.
Cliffdale^{1, 2}	Calhoun	.
Clifford²	Williamson	.
Clifton⁵	Clinton	post office
Clifton^{1, 2}	Iroquois	.
Clifton Terrace²	Madison	.
Clifty Heights²	Williamson	.
Clinton^{1, 2}	DeWitt	.
Clinton⁵	Macon	.
Clinton Hill⁵	St. Clair	.
Clintonville^{1, 2}	Kane	.
Clio⁵	Pike	post office⁵
Cliola Post Office^{1, 2}	Adams	historical
Cloverdale^{1, 2}	DuPage	.
Cloverdale²	Tazewell	.
Clyde¹	Cook	.
Coal Branch Junction¹	Grundy	.
Coal City^{1, 2}	Grundy	.
Coal Hollow²	Bureau	.
Coal Valley^{1, 2}	Rock Island	.
Coaler²	Iroquois	.
Coalton²	Montgomery	.
Coalton²	Vermilion	.
Coalville^{1, 2}	Livingston	.
Coatsburg^{1, 2}	Adams	.
Cobden^{1, 2}	Union	.
Cochran's Grove⁵	Shelby	.
Cody²	Sangamon	.
Coello²	Franklin	.
Coffee Creek Settlement⁵	Wabash	.
Coffeen^{1, 2}	Montgomery	.
Cohn¹	Clark	.
Colby Point²	McHenry	.
Colchester^{1, 2}	McDonough	.
Cold Spring Settlement⁵	Shelby	formerly known as Wakefield's Settlement⁵
Coldbrook^{1, 2}	Warren	.
Coleman^{1, 2}	Kane	.
Coleman^{1, 2}	Sangamon	.
Coles²	Coles	.
Coles¹	Moultrie	.
Colesgrove³	Pike	1823 Gazetteer
Coleta^{1, 2}	Whiteside	.
Colfax^{1, 2}	McLean	.
Collins²	Kankakee	historical
Collins²	Randolph	.
Collinsville^{1, 2}	Madison	.
Collison²	Vermilion	.
Colmar^{1, 2}	McDonough	.
Colona (Station)^{1, 2}	Henry	.
Colonial Meadows²	McLean	.
Colp²	Williamson	.
Columbia³	Franklin	1823 Gazetteer
Columbia^{1, 2}	Monroe	.
Columbiana^{1, 2}	Greene	historical
Columbus^{1, 2}	Adams	.
Columbus⁵	Randolph	.
Columbus^{1, 2}	Scott	historical
Columbus Township¹⁴	Adams	.
Colusa^{1, 2}	Hancock	.
Colvin Park^{1, 2}	DeKalb	.
Combs^{1, 2}	Piatt	.
Comer^{1, 2}	Macoupin	.
Commanche Village²	Sangamon	.
Commerce⁶	Alexander	.
Commerce⁵	Hancock	.
Commercial Point¹	Alexander	.
Como^{1, 2}	Whiteside	.
Compro²	Sangamon	.
Compromise⁶	Champaign	post office
Compton^{1, 2}	Lee	.
Compton's Prairie⁵	Wabash	.
Conant^{1, 2}	Perry	.
Concord¹⁴	Adams	formerly known as Jackson¹⁴
Concord^{1, 2}	Morgan	.
Concord⁵	White	aka Slocumb's
Concord Township¹⁴	Adams	.
Confidence²	Fayette	.
Congerville^{1, 2}	Woodford	.
Conkeytown⁸	Vermilion	historical
Conlogue^{1, 2}	Edgar	.
Conover^{1, 2}	Mason	.
Conrad^{1, 2}	Calhoun	.
Conwayville²	Greene	historical
Cook's Mills^{1, 2}	Coles	.
Cooksville^{1, 2}	McLean	.
Coonsville⁵	Greene	.
Cooper^{1, 2}	Tazewell	.
Cooperstown^{1, 2}	Brown	.
Copperas Creek⁵ Settlement	Fulton	.
Cora^{1, 2}	Jackson	.
Coral^{1, 2}	McHenry	.
Cordes²	Washington	.
Cordova^{1, 2}	Rock Island	.
Corinth^{1, 2}	Williamson	.
Cornell^{1, 2}	Livingston	.
Cornerville²	Hamilton	.
Cornland^{1, 2}	Logan	.
Cortland^{1, 2}	DeKalb	.
Corwin twp²	Logan	.
Corwith^{1, 2}	Cook	.
Coster (Station)¹	Grundy	.
Cottage Grove²	Saline	.
Cottage Hill¹	Putnam	.
Cottage Hill¹⁰	Du Page	now Elmhurst
Cottage Hills²	Madison	.
Cotton Hill^{1, 2}	Sangamon	.
Cottonwood Grove⁶	Bond	.
Cottonberger's Settlement⁵	Macon	.
Cottonwood^{1, 2}	Gallatin	.
Cottonwood Grove⁶	Bond	or Bethel, originally known as Augusta¹⁵
Coughlin²	Peoria	.
Coulterville^{1, 2}	Randolph	.
Council Hill^{1, 2}	Jo Daviess	.
Council Hill Station^{1, 2}	Jo Daviess	.
Country Club Estates²	Coles	.
Country Club Hills²	Cook	.
Country Meadows²	Adams	.
Countryside²	Cook	.
Courtland¹	DeKalb	.
Covell^{1, 2}	McLean	.
Covington^{2, 3, 5}	Washington	1823 Gazetteer
Covington²	Wayne	.
Cowden^{1, 2}	Shelby	.
Cowling^{1, 2}	Wabash	.
Coyne¹	Grundy	.
Coyne^{1, 2}	McHenry	.
Coyne Center²	Rock Island	.
Coynes^{1, 2}	Will	.
Crab Orchard^{1, 2}	Williamson	.
Crab Orchard Estates²	Williamson	.
Cragin^{1, 2}	Cook	.
Craig¹	Perry	.
Crain²	Jackson	.
Crainville^{1, 2}	Williamson	.
Cramer^{1, 2}	Peoria	.
Crampton¹	Henry	.
Crandall^{1, 2}	Tazewell	.
Cravat²	Jefferson	.
Crawford Corners²	Lake	.
Crawford Countryside²	Cook	.
Crawfordsville²	Crawford	historical
Creal Springs^{1, 2}	Williamson	.
Creamery Corners²	Lake	.
Crenshaw Crossing²	Williamson	.
Crescent²	Tazewell	.
Crescent City^{1, 2}	Iroquois	.
Crest Hill²	St. Clair	.
Crest Hill²	Will	.
Creston^{1, 2}	Ogle	.
Crestwood^{1, 2}	Cook	.
Crestwood²	Williamson	.
Crestwood Acres^{1, 2}	Ogle	.
Crete^{1, 2}	Will	.
Creve Coeur²	Tazewell	.
Crisp²	Wayne	.
Croake¹	Cumberland	.
Croft²	Menard	.
Crohurst^U	Logan	.
CroHurst Station^U	Logan	.
Cropsey^{1, 2}	McLean	.
Cross Plains Post Office^{1, 2}	Sangamon	historical
Cross Roads²	Johnson	historical
Crossville^{1, 2}	White	.
Crow Grove⁵	Peoria	aka Boyd's Settlement
Crow Meadow⁵	Putnam	.
Cruger^{1, 2}	Woodford	.
Cruse²	Clay	.
Crystal Gardens²	McHenry	.
Crystal Lake^{1, 2}	McHenry	.
Crystal Lawns²	Will	.
Crystal Manor²	McHenry	.
Crystal Vista²	McHenry	.
Cuba^{1, 2}	Fulton	.
Cuba²	Lake	.
Cullom^{1, 2}	Livingston	.
Culton²	La Salle	historical
Culver²	Menard	.
Cumberland²	Clark	.
Curran⁵	Gallatin	.
Curran^{1, 2}	Sangamon	.
Curtis^{1, 2}	Menard	.
Cushman^{1, 2}	Moultrie	.
Custer²	Marshall	.
Custer Park^{1, 2}	Will	.
Cutler^{1, 2}	Perry	.
Cutler's Settlement⁵	Coles	.
Cutmer²	Iroquois	.
Dad Joe's Grove⁵	Putnam	aka "Old Dad"⁵
Daggett^{1, 2}	Carroll	historical
Dahinda^{1, 2}	Knox	.
Dahlgren^{1, 2}	Hamilton	.
Dailey²	Champaign	.
Dakota^{1, 2}	Stephenson	.
Dale^{1, 2}	Hamilton	.
Dallas City^{1, 2}	Hancock	.
Dalton City^{1, 2}	Moultrie	.
Dalzell²	Bureau	.
Damascus^{1, 2}	Stephenson	.
Damiansville^{1, 2}	Clinton	.
Damon²	Brown	.
Dana^{1, 2}	La Salle	.
Danforth^{1, 2}	Iroquois	.
Danley²	Randolph	.
Danvers^{1, 2}	McLean	.
Danville^{1, 2}	Vermilion	.
Danway^{1, 2}	La Salle	.
Dareville²	Jefferson	.
Darien²	DuPage	.
Darmstadt^{1, 2}	St. Clair	historical
Darrow²	Iroquois	.
Darwin^{1, 2}	Clark	.
Davis²	Morgan	.
Davis^{1, 2}	Stephenson	.
Davis Junction^{1, 2}	Ogle	.
Daviston⁵	Schuyler/Adams	post office
Dawleys²	Alexander	.
Dawson^{1, 2}	Sangamon	.
Daysville^{1, 2}	Ogle	.
Dayton²	Henry	.
Dayton^{1, 2}	La Salle	.
De Land^{1, 2}	Piatt	.
De Soto^{1, 2}	Jackson	.
Dead Man's Grove⁵	Coles	.
Deaton's Mill⁵	Morgan	.
Decatur^{1, 2}	Macon	.
Decker's Prairie⁵	Wabash	.
Decorra^{1, 2}	Henderson	.
Deer Creek^{1, 2}	Tazewell	.
Deer Grove^{1, 2}	Whiteside	.
Deer Park^{1, 2}	La Salle	.
Deer Park²	Lake	.
Deer Plain^{1, 2}	Calhoun	post office⁶
Deer Ridge²	Johnson	.
Deer Run²	Kane	.
Deerfield²	Lake	.
Deering City²	Franklin	.
Deerpath²	Lake	.
Deers^{1, 2}	Champaign	.
Dees²	Cumberland	.
Degognia^{1, 2}	Jackson	.
DeKalb^{1, 2}	DeKalb	.
Del Mar Woods²	Lake	.
Delafield^{1, 2}	Hamilton	.
Delana¹	McLean	.
Delavan^{1, 2}	Tazewell	.
Delhi⁵	Greene	aka Lurton's
Delhi^{1, 2}	Jersey	.
Dell Abbey^{1, 2}	Grundy	.
DeLong^{1, 2}	Knox	.
Delrey^{1, 2}	Iroquois	.
Delta²	Saline	.
Delwood²	Pope	.
Democrat Spring²	Jersey	.
Denmark^{1, 2}	Perry	.
Denmark²	Vermilion	historical
Dennison^{1, 2}	Clark	.
Denny^{1, 2}	Perry	.
Denny²	Warren	historical
Denrock^{1, 2}	Whiteside	.
Denver^{1, 2}	Hancock	.
Depler Springs²	Fulton	.
Depue^{1, 2}	Bureau	.
Derby²	Ford	.
Derby²	Saline	.
Derinda^{1, 2}	Jo Daviess	.
Des Plaines^{1, 2}	Cook	.
Deselm^{1, 2}	Kankakee	.
Detroit^{1, 2}	Pike	.
Devereux Heights²	Sangamon	.
Dewey^{1, 2}	Champaign	.
DeWitt^{1, 2}	DeWitt	.
Dewmaine²	Williamson	.
Dexter^{1, 2}	Effingham	.
Diamond^{1, 2}	Grundy	.
Diamond City^{1, 2}	Hamilton	.
Diamond Cross²	Randolph	.
Diamond Grove³	Greene	1823 Gazeteer
Diamond Lake^{1, 2}	Lake	.
Diana²	Franklin	.
Dickerson^{1, 2}	Champaign	.
Dickeys^{1, 2}	Kankakee	.
Dieterich^{1, 2}	Effingham	.
Dillard's⁵	Gallatin	.
Dillon/Dillon's^{1, 2}	Tazewell	also post office
Dillonfield²	Kane	.
Dillsburg^{1, 2}	Champaign	.
Dimmick^{1, 2}	La Salle	.
Diona^{1, 2}	Coles	.
Disco^{1, 2}	Hancock	.
Diswood²	Alexander	.
Divernon^{1, 2}	Sangamon	.
Divide^{1, 2}	Jefferson	.
Divine^{1, 2}	Grundy	.
Dix^{1, 2}	Jefferson	.
Dixmoor²	Cook	.
Dixon^{1, 2}	Lee	.
Dixon Springs^{1, 2}	Pope	.
Dixon's Ferry⁵	Ogle	post office
Dixonville⁵	Ogle	.
Doddsville^{1, 2}	McDonough	.
Dog Walk²	Williamson	.
Dogwood²	Crawford	.
Dollville^U	Christian	Johnson twp
Dollville²	Shelby	.
Dolton^{1, 2}	Cook	.
Donaldson³	Washington	1823 Gazetteer
Doney²	Kankakee	.
Dongola^{1, 2}	Union	.
Donkville²	Madison	.
Donnellson^{1, 2}	Montgomery	.
Donny Hill Meadows²	Kane	.
Donohue's Settlement⁵	Jefferson	.
Donovan^{1, 2}	Iroquois	.
Dorans^{1, 2}	Coles	.
Dorchester^{1, 2}	Macoupin	.
Dorris Heights²	Saline	.
Dorrisville²	Saline	.
Dorsey^{1, 2}	Madison	.
Douglas^{1, 2}	Knox	.
Douglas²	St. Clair	.
Douglas Park²	Whiteside	.
Douglass⁵	Macoupin	.
Dover¹⁴	Adams	name changed to Gilmer in 1850¹⁴
Dover^{1, 2}	Bureau	.
Dow²	Jersey	.
Dowell²	Jackson	.
Downers Grove^{1, 2}	DuPage	.
Downing's Settlement⁵	Bond	.
Downs^{1, 2}	McLean	.
Doyles²	Clark	.
Dozaville²	Randolph	.
Dresden^U	Grundy	Extinct
Dressor^{1, 2}	Fayette	.
Drewry's Creek⁵ Settlement	Jackson	.
Driftwood⁵	Iroquois	post office
Drivers^{1, 2}	Jefferson	.
Druce Lake²	Lake	.
Drummond^{1, 2}	Will	.
Dry Grove⁵	McLean	.
Dry Hill^{1, 2}	Jackson	.
Du Bois^{1, 2}	Washington	.
Du Quoin^{1, 2}	Perry	.
DuBois Center²	Washington	.
Dudley^{1, 2}	Effingham	.
Dudley's Settlement⁵	Coles	.
Dudleyville^{1, 2}	Bond	.
Duncan^{1, 2}	Stark	Essex twp
Duncan Mills^{1, 2}	Fulton	.
Duncanton⁵	White	post office
Duncanville^{1, 2}	Crawford	.
Dundas^{1, 2}	Richland	.
Dunes Park²	Lake	.
Dunfermline^{1, 2}	Fulton	.
Dunham Castle²	Kane	.
Dunkel^{1, 2}	Christian	Assumption twp
Dunlap^{1, 2}	Peoria	.
Dunn^{1, 2}	Moultrie	.
Dunn Corners²	Lake	.
Dunning^{1, 2}	Cook	.
Dupo²	St. Clair	.
Durand^{1, 2}	Winnebago	.
Durham^{1, 2}	Hancock	.
Durley²	Bond	.
Dutch Hill Settlement⁵	St. Clair	.
Dutch Hollow²	St. Clair	.
Dutch Mills²	Union	.
Dutch Settlement⁵	Union	.
Dutton²	Pike	.
Duvall²	Shelby	.
Dwight^{1, 2}	Livingston	.
Dykersburg²	Williamson	.
Eagerville²	Macoupin	.
Eagle²	Saline	.
Eagle Lake^{1, 2}	Will	.
Eagle Park²	Madison	.
Eagle Point^{1, 2}	Ogle	.
Eagle Ridge²	McLean	.
Eagle Point Bay²	Johnson	.
Earlville^{1, 2}	La Salle	.
East Alton²	Madison	.
East Brooklyn²	Grundy	.
East Cape Girardeau^{1, 2}	Alexander	.
East Carondelet^{1, 2}	St. Clair	.
East Clinton^{1, 2}	Whiteside	.
East Dubuque^{1, 2}	Jo Daviess	.
East Dundee²	Kane	.
East Galesburg²	Knox	.
East Gillespie²	Macoupin	.
East Hannibal^{1, 2}	Pike	.
East Hardin²	Greene	.
East Hazel Crest²	Cook	.
East Joliet^{1, 2}	Will	.
East Lawndale²	Fulton	.
East Lincoln twp²	Logan	.
East Lynn^{1, 2}	Vermilion	.
East Moline²	Rock Island	.
East Newbern^{1, 2}	Jersey	.
East Paw Paw¹	DeKalb	.
East Paw Paw^{1, 2}	Lee	.
East Peoria²	Tazewell	.
East Saint Louis^{1, 2}	St. Clair	.
East Springfield²	Sangamon	.
East Stockton²	Jo Daviess	historical
East Village²	McDonough	.
Eastburn^{1, 2}	Iroquois	.
Easton^{1, 2}	Mason	.
Eastwood Manor²	McHenry	.
Eaton¹	Crawford	.
Eaton's Mill Settlement⁵	Jasper	.
Eberle^{1, 2}	Effingham	.
Ebner²	Carroll	.
Eckard²	Mason	.
Edinburg⁵	Sangamon	.
Eddy²	Lake	.
Eddyville^{1, 2}	Pope	.
Edelstein^{1, 2}	Peoria	.
Eden^{1, 2}	Peoria	.
Eden²	Randolph	.
Eden Park²	Williamson	.
Edgar^{1, 2}	Edgar	.
Edgemont²	St. Clair	.
Edgetown²	Kankakee	.
Edgewood²	Boone	.
Edgewood^{1, 2}	Effingham	.
Edgington^{1, 2}	Rock Island	.
Edinburg^{1, 2, 6}	Christian	Buckhart twp
Edmonson's Prairie⁵	McDonough	.
Edward's Settlement⁵	Pike	.
Edwards^{1, 2}	Peoria	.
Edwardsville^{1, 2, 3}	Madison	1823 Gazetteer
Effingham^{1, 2}	Effingham	.
Effner^{1, 2}	Iroquois	.
Egan^{1, 2}	Ogle	.
Egypt Shores²	Williamson	.
Egyptian Acres²	Williamson	.
Egyptian Hills²	Johnson	.
Eichorn²	Hardin	.
Eileen²	Grundy	.
El Dara^{1, 2}	Pike	.
El Paso^{1, 2}	Woodford	.
El Vista²	Peoria	.
Elba^{1, 2}	Gallatin	.
Elba Center²	Knox	.
Elbow²	Richland	.
Elbridge²	Edgar	post office
Elburn^{1, 2}	Kane	.
Elco^{1, 2}	Alexander	.
Eldena^{1, 2}	Lee	.
Elderville^{1, 2}	Hancock	.
Eldorado^{1, 2}	Saline	.
Eldred^{1, 2}	Greene	.
Eldridge²	Kankakee	.
Eleanor^{1, 2}	Warren	.
Eleroy^{1, 2}	Stephenson	.
Elgin^{1, 2}	Kane	.
Elgin⁵	McHenry	.
Elida¹	Winnebago	.
Eliza^{1, 2}	Mercer	.
Elizabeth^{1, 2}	Jo Daviess	.
Elizabeth City¹⁵	Bond	"city on paper" laid out ca 1840¹⁵
Elizabethtown^{1, 2}	Hardin	.
Elk Grove^{1, 2}	Cook	.
Elk Grove Village²	Cook	.
Elk Hart^{1, 2}	Logan	.
Elk Horn Grove⁶	Carroll	post office
Elk Prairie¹	Jefferson	.
Elk Prairie⁵	Prairie	.
Elkheart Grove^{3, 5}	Sangamon	1823 Gazetteer
Elkhorn^{1, 5}	Washington	.
Elkhorn Grove^{1, 2}	Carroll	.
Elkton²	Washington	.
Elkville¹	Jackson	.
Ellery¹	Edwards	.
Ellery²	Wayne	.
Ellington¹⁴	Adams	.
Ellington Township¹⁴	Adams	.
Elliott^{1, 2}	Ford	.
Elliottstown^{1, 2}	Effingham	.
Ellis²	Christian	.
Ellis²	Sangamon	.
Ellis²	Vermilion	.
Ellis Grove^{1, 2}	Randolph	.
Ellis Mound^{1, 2}	Hamilton	.
Ellison^{1, 2}	Warren	historical
Ellisville^{1, 2}	Fulton	.
Ellsworth^{1, 2}	McLean	.
Elm Grove²	White	historical
Elm Point²	Bond	historical, laid out in 1856¹⁵
Elmhurst^{1, 2, 10}	DuPage	was Cottage Hill
Elmira^{1, 2}	Stark	Elmira twp
Elmore^{1, 2}	Peoria	.
Elmoville²	Jo Daviess	.
Elmwood^{1, 2}	Peoria	.
Elmwood Park²	Cook	.
Elsah^{1, 2}	Jersey	.
Elsdon^{1, 2}	Cook	.
Eltham²	Jackson	historical
Elva (Station)^{1, 2}	DeKalb	.
Elvaston^{1, 2}	Hancock	.
Elvira (Settlement)^{1, 2, 5}	Johnson	.
Elvira³	Union	1823 Gazetteer
Elwin^{1, 2}	Macon	.
Elwood^{1, 2}	Will	.
Embarras (Siding)^{1, 2}	Coles	aka Embarras Settlement
Emden^{1, 2}	Logan	.
Emerald Acres²	Cook	.
Emerald Park²	McHenry	.
Emerson^{1, 2}	Whiteside	.
Emerson City²	Jefferson	.
Emery^{1, 2}	Macon	.
Eminence twp²	Logan	.
Eminence⁵	Tazewell	.
Emington^{1, 2}	Livingston	.
Emma^{1, 2}	White	.
Emmettsburg⁵	Will???	.
Empire^{1, 2}	McLean	.
Empire Hills²	Kane	.
Energy²	Williamson	.
Enfield^{1, 2}	White	.
Englewood^{1, 2}	Cook	.
English Prairie^{1, 2}	McHenry	post office, historical
English Settlement⁵	Morgan	.
English Settlement⁵	Monroe	.
Enion²	Fulton	.
Enos^{1, 2}	Macoupin	.
Enright²	McLean	.
Enterprise^{1, 2}	Wayne	.
Eola^{1, 2}	DuPage	.
Epplyanna²	Stephenson	.
Epworth²	White	.
Equality^{1, 2}	Gallatin	.
Erie^{1, 2}	Whiteside	.
Erienna Township¹³	Grundy	.
Ernst^{1, 2}	Clark	.
Erwin^{1, 2}	Schuyler	.
Esmond^{1, 2}	DeKalb	.
Essex^{1, 2}	Kankakee	.
Essex's Settlement⁵	Putnam	.
Etherton²	Jackson	.
Etna^{1, 2}	Coles	.
Eugene²	Knox	.
Eureka^{1, 2}	Woodford	.
Evan's Settlement⁵	Union	.
Evans²	Logan	.
Evans²	Marshall	.
Evanston^{1, 2}	Cook	.
Evansville^{1, 2}	Randolph	.
Evanswood²	Kane	.
Evarts^{1, 2}	Stephenson	.
Everett²	Lake	.
Evergreen Park^{1, 2}	Cook	.
Evergreen Terrace²	Jackson	.
Evers²	Effingham	.
Ewbanks²	Adams	aka Eubanks
Ewing^{1, 2}	Franklin	.
Ewington²	Effingham	.
Exermont²	St. Clair	.
Exeter⁵	Morgan	.
Exeter^{1, 2}	Scott	.
Exline^{1, 2}	Kankakee	.
Exposition View²	Kane	.
Eylar^{1, 2}	Livingston	.
Eyman's Settlement⁵	St. Clair	.
Fair Haven^{1, 2, 6}	Carroll	.
Fair Oaks²	Kane	.
Fairbanks^{1, 2}	Moultrie	.
Fairbury^{1, 2}	Livingston	.
Fairdale²	DeKalb	.
Fairfield⁵	Adams	.
Fairfield⁵	Hancock	.
Fairfield²	Lake	.
Fairfield^{1, 2}	Wayne	.
Fairgrange^{1, 2}	Coles	.
Fairland^{1, 2}	Douglas	.
Fairman^{1, 2}	Marion	.
Fairmont²	Madison	.
Fairmont²	Will	.
Fairmont City²	St. Clair	.
Fairmount^{1, 2}	Vermilion	aka Salina
Fairview⁶	Bond	.
Fairview^{1, 2}	Fulton	.
Fairview²	Hardin	.
Fairview Heights²	St. Clair	.
Fairweather¹	Adams	.
Faithorn²	Will	.
Fall Creek^{1, 2}	Adams	formerly known as Benton¹⁴
Fall Creek Township¹⁴	Adams	.
Falling Spring^{1, 2}	St. Clair	.
Falmouth^{1, 2}	Jasper	.
Fancher^{1, 2}	Shelby	.
Fancy Farm⁵	Franklin	post office
Fancy Prairie^{1, 2}	Menard	.
Fandon^{1, 2}	McDonough	.
Fargo^{1, 2}	Brown	.
Faries Park²	Macon	historical
Farina^{1, 2}	Fayette	.
Farm Ridge^{1, 2}	La Salle	.
Farmdale^{1, 2}	Tazewell	.
Farmer City^{1, 2}	DeWitt	.
Farmersville^{1, 2}	Montgomery	.
Farmingdale^{1, 2}	Sangamon	.
Farmington^{1, 2}	Fulton	.
Farmington²	Kane	.
Farmsville²	Woodford	historical
Farrington^{1, 2}	Clark	.
Farrowtown⁶	Calhoun	.
Fayette^{1, 2}	Greene	.
Fayetteville^{1, 2}	St. Clair	.
Fayville^{1, 2}	Alexander	.
Felix Township¹³	Grundy	.
Fenton^{1, 2}	Whiteside	.
Ferber²	Franklin	.
Ferdinand¹	Rock Island	.
Fergestown²	Williamson	.
Fern Hill²	St. Clair	.
Ferndale²	McHenry	.
Fernway²	Cook	.
Fernway Park²	Cook	.
Fernwood¹	Cook	.
Ferrel^{1, 2}	Edgar	.
Ferrin²	Clinton	.
Ferris^{1, 2}	Hancock	.
Ferson Creek Woods²	Kane	.
Fiatt^{1, 2}	Fulton	.
Ficklin^{1, 2}	Douglas	.
Fidelity^{1, 2}	Jersey	.
Fieldon^{1, 2}	Jersey	.
Fillmore^{1, 2}	Douglas	historical
Fillmore²	Montgomery	.
Filson^{1, 2}	Douglas	.
Finch's Settlement⁵	Knox	.
Findlay^{1, 2}	Shelby	.
Finleyville^U	Christian	South Fork twp
Finneyville²	Hardin	.
First Pommier²	Kankakee	.
Fisher^{1, 2}	Champaign	.
Fishhook^{1, 2}	Pike	.
Fitchmoor²	La Salle	.
Fithian^{1, 2}	Vermilion	.
Fitzgerrell^{1, 2}	Jefferson	historical
Five Island Park²	Kane	.
Five Points²	DeKalb	.
Five Points²	Lake	.
Flagg^{1, 2}	Ogle	.
Flagg Center^{1, 2}	Ogle	.
Flanagan^{1, 2}	Livingston	.
Flat Branch	Christian	Source: Photo Postcard taken by Cal J Resler, of flooding Sept 29, 1911
Flat Prairie⁵	Randolph	.
Flat Rock^{1, 2}	Crawford	.
Flatville^{1, 2}	Champaign	.
Flatwoods²	Johnson	.
Flemingsburg²	Effingham	historical
Fletcher^{1, 2}	McLean	.
Flickerville²	Kankakee	.
Flint^{1, 2}	Hamilton	.
Flora^{1, 2}	Clay	.
Flora⁵	Edgar	.
Floraville^{1, 2}	St. Clair	.
Florence^{1, 2}	Pike	.
Florence^{1, 2}	Stephenson	.
Floria⁵	Putnam	.
Florid^{1, 2}	Putnam	.
Flossmoor²	Cook	.
Flossmoor Highlands²	Cook	.
Flowerfield²	DuPage	.
Fogarty²	Logan	.
Fond du Lac²	Tazewell	.
Foosland^{1, 2}	Champaign	.
Fopal²	Williamson	.
Ford Heights²	Cook	.
Forest City^{1, 2}	Mason	.
Forest Hills²	Kane	.
Forest Lake²	Lake	.
Forest Park²	Cook	.
Forest Park²	Will	.
Forest River²	Cook	.
Forest View²	Cook	.
Fork Settlement⁵	Clinton	.
Forked Creek⁵	Will	post office
Forman²	Johnson	.
Formosa Junction^{1, 2}	Madison	.
Forrest^{1, 2}	Livingston	.
Forreston^{1, 2}	Ogle	.
Forsyth^{1, 2}	Macon	.
Fort Gage²	Randolph	.
Fort Hill^{1, 2}	Lake	.
Forty Acres²	Fulton	.
Fossland²	Lake	.
Foster Pond^{1, 2}	Monroe	historical
Foster's Settlement⁵	McDonough	.
Fosterburg^{1, 2}	Madison	.
Fountain²	Monroe	.
Fountain Bluff²	Jackson	.
Fountain Ferry³	Madison	1823 Gazetteer
Fountain Gap¹	Monroe	.
Fountain Creek²	Iroquois	.
Fountain Green^{1, 2}	Hancock	.
Fountaindale⁵	DuPage/Cook	.
Four Corners²	Madison	.
Fowler^{1, 2}	Adams	.
Fox²	Kendall	.
Fox Hills²	Cook	.
Fox Lake^{1, 2}	Lake	.
Fox Lake Hills²	Lake	.
Fox River⁵	White	post office
Fox River Grove²	McHenry	.
Foxcroft²	DuPage	.
Foxfield²	Kane	.
Foxville^{1, 2}	Marion	.
Frahms Country Acres²	Ogle	.
Francis²	Saline	.
Frankers⁵	Henry	.
Frankfort^{1, 2, 3}	Franklin	1823 Gazetteer
Frankfort (Station)^{1, 2}	Will	.
Frankfort Square²	Will	.
Franklin^{1, 2}	Morgan	.
Franklin⁸	Vermilion	abandoned; "laid out by I. Swisher, and H. Rogers on March 13, 1837"
Franklin Corners²	Whiteside	.
Franklin Grove^{1, 2}	Lee	.
Franklin Grove⁵	Ogle	.
Franklin Park^{1, 2}	Cook	.
Franklinville²	McHenry	.
Franks^{1, 2}	DeKalb	.
Fransonia²	Richland	historical
Fravert²	Tazewell	.
Frederick^{1, 2}	Schuyler	.
Fredonia^{1, 2}	Williamson	historical
Free's Settlement⁵	St. Clair	.
Freeburg^{1, 2}	St. Clair	.
Freedom Centre^{1, 2}	La Salle	historical
Freedville²	Iroquois	.
Freeman^{1, 2}	Kane	.
Freeman Spur²	Williamson	.
Freenanton²	Effingham	historical
Freeport^{1, 2}	Stephenson	.
Fremont²	Clinton	historical
Fremont Center^{1, 2}	Lake	.
French Grove¹	Peoria	.
French Settlement⁵	Lawrence	.
French Village^{1, 2, 3}	St. Clair	aka Little French Village; 1823 Gazetteer
Frielings²	Kankakee	.
Friendsville^{1, 2}	Wabash	.
Frisco²	Franklin	.
Frogtown²	Washington	.
Frontenac^{1, 2}	DuPage	.
Fruit^{1, 2}	Madison	.
Fruitland²	Rock Island	.
Fuller²	Moultrie	.
Fullersburg^{1, 2}	DuPage	.
Fullerton^{1, 2}	DeWitt	.
Fulls²	Champaign	.
Fulscher^U	Logan	.
Fulton^{1, 2}	Whiteside	.
Fulton Center²	Fulton	historical
Fults²	Monroe	.
Funkhouser^{1, 2}	Effingham	.
Funk's Grove^{1, 2}	McLean	.
Furman^{1, 2}	St. Clair	.
Future City²	Alexander	.
Gages Lake²	Lake	.
Galatia^{1, 2}	Saline	.
Gale²	Alexander	.
Gale^U	Logan	.
Galena^{1, 2}	Jo Daviess	.
Galena Junction^{1, 2}	Jo Daviess	.
Galesburg^{1, 2}	Knox	.
Galesville^{1, 2}	Piatt	.
Gallagher^{1, 2}	Richland	.
Galt^{1, 2}	Whiteside	.
Galton^{1, 2}	Douglas	.
Galva^{1, 2}	Henry	.
Ganntown^{1, 2}	Johnson	.
Garber^{1, 2}	Ford	.
Gard²	Madison	.
Garden Heights²	Saline	.
Garden of Eden²	Kankakee	.
Garden Plain^{1, 2}	Whiteside	.
Garden Prairie^{1, 2}	Boone	.
Gardena²	Tazewell	.
Gardner^{1, 2}	Grundy	.
Gards Point^{1, 2}	Wabash	.
Garfield^{1, 2}	La Salle	.
Garfield Township¹³	Grundy	.
Garland^{1, 2}	Edgar	.
Garnerville²	White	.
Garrett^{1, 2}	Douglas	.
Garrison²	Hamilton	.
Gartside^{1, 2}	St. Clair	.
Gary²	Cook	.
Gaskins City²	Saline	.
Gaslight Village²	Grundy	.
Gays^{1, 2}	Moultrie	.
Gears Ferry^{1, 2}	Jo Daviess	.
Geff^{1, 2}	Wayne	.
Geneseo^{1, 2}	Henry	.
Genet^{1, 2}	Winnebago	.
Geneva^{1, 2}	Kane	.
Geneva⁵	Morgan	.
Geneva²	Scott	historical
Genoa^{1, 2}	DeKalb	.
Georgetown²	Carroll	.
Georgetown^U	Logan	.
Georgetown⁵	Randolph	.
Georgetown⁵	Sangamon	.
Georgetown^{1, 2}	Vermilion	.
Gerald²	Champaign	.
Gerlaw^{1, 2}	Warren	.
German Corner²	Henry	.
German Valley^{1, 2}	Stephenson	.
Germantown^{1, 2}	Clinton	.
Germantown Hills²	Woodford	.
Germany⁵	Sangamon	.
Giblin²	Champaign	.
Gibraltar³	Madison	1823 Gazetteer
Gibson City^{1, 2}	Ford	.
Gibsonia²	Gallatin	.
Gifford^{1, 2}	Champaign	.
Gila^{1, 2}	Jasper	.
Gilbert⁸	Vermilion	aka Alvin; named for Alvan Gilbert
Gilberts^{1, 2}	Kane	.
Gilbirds^{1, 2}	Brown	.
Gilchrist²	Fulton	.
Gilchrist^U	Logan	.
Gilchrist^{1, 2}	Mercer	.
Gilead^{1, 2}	Calhoun	.
Gilham's Settlement⁵	Bond	.
Gillespie^{1, 2}	Macoupin	.
Gillett^U	Logan	.
Gilletts²	Will	.
Gillum^{1, 2}	McLean	.
Gilman^{1, 2}	Iroquois	.
Gilmer¹⁴	Adams	formerly known as Dover¹⁴
Gilmer^{1, 2}	Lake	.
Gilmer Township¹⁴	Adams	.
Gilmore²	Bond	.
Gilmore^{1, 2}	Effingham	.
Gilmore's Settlement⁵	Clinton	.
Gilson^{1, 2}	Knox	.
Ginger Hill²	Rock Island	.
Gingerville^U	Christian	Prairieton twp
Gingle Corners²	Mercer	.
Girard^{1, 2}	Macoupin	.
Gladstone^{1, 2}	Henderson	.
Glasford^{1, 2}	Peoria	.
Glasgow^{1, 2}	Scott	.
Glen Avon²	McLean	.
Glen Carbon²	Madison	.
Glen Carbon Crossing²	Madison	.
Glen Ellyn^{1, 2}	DuPage	.
Glen Oak²	DuPage	.
Glenarm^{1, 2}	Sangamon	.
Glenburn^{1, 2}	Vermilion	.
Glencoe^{1, 2}	Cook	.
Glendale^{1, 2}	Pope	.
Glendale²	Rock Island	historical
Glendale Heights²	DuPage	.
Glenn²	Cook	.
Glenn²	Jackson	.
Glenview²	Cook	.
Glenview²	St. Clair	.
Glenwood^{1, 2}	Cook	.
Glenwood²	Richland	historical
Globe^{1, 2}	Cook	.
Glover²	Champaign	.
Godfrey^{1, 2}	Madison	.
Godley^U	Grundy	.
Godley²	Will	.
Goeselville^{1, 2}	Cook	.
Golconda^{1, 2, 3}	Pope	aka Lusk's Ferry; 1823 Gazetteer
Gold Spring²	Logan	.
Golden^{1, 2}	Adams	.
Golden Acres²	Peoria	.
Golden Eagle^{1, 2}	Calhoun	.
Golden Gardens²	St. Clair	.
Golden Gate^{1, 2}	Wayne	.
Golden Lily²	Alexander	.
Golf²	Cook	.
Golf Lakes²	Clark	.
Good Hope^{1, 2}	McDonough	.
Goodenow^{1, 2}	Will	.
Goodfarm Township¹³	Grundy	.
Goodfield^{1, 2}	Woodford	.
Goodings Grove^{1, 2}	Will	.
Goodrich^{1, 2}	Kankakee	.
Goodwine^{1, 2}	Iroquois	.
Goofy Ridge²	Mason	.
Goose Island^{1, 2}	Mason	.
Gooselake Township¹³	Grundy	.
Gordon^{1, 2}	Crawford	.
Goreville^{1, 2}	Johnson	.
Gorham²	Jackson	.
Gorman²	Grundy	.
Goshen⁵	Madison	.
Gossett^{1, 2}	White	.
Gougars²	Will	.
Gowansville²	Pope	historical
Gowins²	Pope	.
Grable's Settlement⁵	Gallatin	.
Grafton⁵	Greene	.
Grafton^{1, 2}	Jersey	.
Graham's Settlement⁵	Alexander	.
Grand Chain^{1, 2}	Pulaski	.
Grand Detour^{1, 2}	Ogle	.
Grand Pass²	Greene	.
Grand Ridge^{1, 2}	La Salle	.
Grand Tower^{1, 2}	Jackson	.
Grand View^{1, 2, 5}	Edgar	.
Grandview²	Sangamon	.
Grandwood Park²	Lake	.
Graney²	Madison	.
Grange Hall^{1, 2}	Jackson	.
Grange Hall²	Lake	.
Granite City²	Madison	.
Grant Park^{1, 2}	Kankakee	.
Grant Village²	Cook	.
Grantfork^{1, 2}	Madison	.
Grantsburg^{1, 2}	Johnson	.
Granville^{1, 2}	Putnam	.
Grape Creek^{1, 2}	Vermilion	.
Grass Lake^{1, 2}	Lake	.
Graymont^{1, 2}	Livingston	.
Graymoor²	Cook	.
Grays Corner²	Lawrence	.
Grayslake^{1, 2}	Lake	.
Grayville²	Edwards	.
Graysville⁵	White	.
Greasy Neck Ford^U	Christian	Johnson twp
Great Lakes²	Lake	.
Green Acres²	Sangamon	.
Green Brier²	Crawford	.
Green Castle²	Madison	.
Green Creek²	Effingham	.
Green Oaks²	Lake	.
Green Plains⁵	Hancock	.
Green River^{1, 2}	Henry	.
Green Rock²	Henry	.
Green Valley^{1, 2}	Tazewell	.
Green's Settlement⁵	Bond	.
Greenbriar²	McLean	.
Greenbush^{1, 2}	Warren	.
Greendale²	Clay	.
Greenfield^{1, 2}	Greene	.
Greenfield⁵	Sangamon	.
Greenfield Township¹³	Grundy	.
Greenland²	Fayette	historical
Greenoak^{1, 2}	Bureau	.
Greenpond²	Pike	.
Greenridge²	Macoupin	.
Greenup⁵	Coles	.
Greenup^{1, 2}	Cumberland	.
Greenvale¹	Jo Daviess	historical
Greenview^{1, 2}	Menard	.
Greenville^{1, 2, 3}	Bond	1823 Gazetteer
Greenville²	Franklin	historical
Greenville⁸	Vermilion	abandoned; "...was laid off by Joseph Osborn. It was located on the west quarter of section No. 31, township 19, N. of R. No. 13 west in the county of Vermilion and state of Illinois."
Greenwich^{1, 2}	Kankakee	.
Greenwood^{1, 2}	McHenry	.
Greer²	Iroquois	.
Gregory's Settlement⁵	Clinton	.
Gretna^{1, 2}	DuPage	.
Gridley^{1, 2}	McLean	.
Griffin²	Clark	historical
Griffin^{1, 2}	Mercer	.
Grigg²	Randolph	.
Griggs^U	Logan	.
Griggsville^{1, 2}	Pike	.
Grimes Addition²	Whiteside	.
Grimsby²	Jackson	.
Grinnell^{1, 2}	Massac	.
Grisold²	Lawrence	historical
Griswold^{1, 2}	Livingston	.
Griswold's Post Office⁵	Hamilton	.
Groat²	Franklin	.
Gross(ville)^{1, 2}	Hardin	.
Gross Point²	Cook	.
Grove City^{1, 2, 6}	Christian	Mt. Auburn twp
Groveland^{1, 2}	Tazewell	.
Grubbs^{1, 2}	Jackson	.
Grumle Corner²	Vermilion	.
Grundyville^U	Grundy	aka Morris
Guilford⁵	Calhoun	.
Guilford²	Jo Daviess	.
Gulfport²	Henderson	.
Gum's Fort⁵	Knox	.
Gurnee^{1, 2}	Lake	.
Gurney^{1, 2}	Cass	historical
Guthrie^{1, 2}	Ford	.
Hadley²	Lawrence	.
Hadley^{1, 2}	Pike	.
Hadley²	Will	.
Haegers Bend²	McHenry	.
Hagaman^{1, 2}	Macoupin	.
Hagarstown^{1, 2}	Fayette	.
Hagener^{1, 2}	Cass	.
Hahnaman²	Whiteside	.
Hainesville^{1, 2}	Lake	.
Haldane^{1, 2}	Ogle	.
Hale Ridge²	Schuyler	historical
("Hell's") Half Acre^U	Christian	Johnson twp; extinct
Half Day^{1, 2}	Lake	⁴post-village; 28 miles N of Chicago; 1853: 250 inhabitants
Hallidayboro²	Jackson	.
Hallock²	Iroquois	.
Hallsville^{1, 2}	DeWitt	.
Halltown²	Saline	historical
Halsey²	Union	.
Hamburg²	Bond	named by Dr. Daniel B Sturgis, 1848¹⁵
Hamburg^{1, 2, 5}	Calhoun	.
Hamburg (Landing)^{2, 3}	Union	1823 Gazetteer
Hamel^{1, 2}	Madison	.
Hamilton⁶	Cass	post office
Hamilton^{1, 2}	Hancock	.
Hamilton^U	Logan	.
Hamilton³	Montgomery	1823 Gazetteer
Hamilton Corners²	Whiteside	.
Hamlet^{1, 2}	Mercer	.
Hamletsburg^{1, 2}	Pope	.
Hammet's Settlement⁵	Coles	.
Hammond^{1, 2}	Piatt	.
Hampshire^{1, 2}	Kane	.
Hampton^{1, 2}	Rock Island	.
Hanaford²	Franklin	.
Hanks Station²	Greene	.
Hanna City^{1, 2}	Peoria	.
Hanover^{1, 2}	Jo Daviess	.
Hanover⁵	Tazewell	.
Hanover Park²	DuPage	.
Hanson²	Shelby	.
Happy Hills²	Kane	.
Harbor Light Bay²	Clinton	.
Harco²	Saline	.
Harden's Settlement⁵	Hancock	.
Hardin^{1, 2}	Calhoun	.
Harding²	La Salle	.
Hardinville^{1, 2}	Crawford	.
Hardscrabble⁷	Cook	aka Lee's Place
Hargrave's Prairie⁵	Wayne	.
Harkers Corners¹	Peoria	.
Harkness's Settlement⁵	Peoria	.
Harlem^{1, 2}	Winnebago	.
Harmon^{1, 2}	Lee	.
Harmony²	Jefferson	.
Harmony^{1, 2}	McHenry	.
Harness²	Logan	.
Harper^{1, 2}	Ogle	.
Harper²	White	historical
Harpster^{1, 2}	Ford	.
Harris²	Edgar	.
Harris^{1, 2}	Piatt	.
Harris Corners^{1, 2}	Lake	.
Harris Grove²	Jefferson	historical
Harrisburg^{1, 2}	Saline	.
Harrison^{1, 2}	Jackson	.
Harrison^{1, 2}	Winnebago	.
Harrisonville¹⁵	Bond	historical, 1838¹⁵
Harrisonville²	Grundy	.
Harrisonville^{1, 2, 3}	Monroe	1823 Gazetteer
Harristown^{1, 2}	Macon	.
Harrisville²	Winnebago	.
Hartford²	Madison	.
Hartford²	Williamson	.
Hartland^{1, 2}	McHenry	.
Hartsburg^{1, 2}	Logan	.
Hartshorn²	Vermilion	.
Hartsville^{1, 2}	Pope	.
Hartwig^U	Logan	.
Harvard^{1, 2}	McHenry	.
Harvard Hills²	Tazewell	.
Harvel^U	Christian	King twp
Harvel^{1, 2}	Montgomery	.
Harvey^{1, 2}	Cook	.
Harwood Heights²	Cook	.
Hastings⁶	Calhoun	post office
Hastings²	Cook	.
Hastings²	Kane	.
Hastings²	Vermilion	.
Havana^{1, 2}	Mason	.
Hawkins Glen²	Kane	.
Hawley¹	Henry	.
Hawley^{1, 2}	Tazewell	historical
Hawthorn¹	White	.
Hawthorn Woods²	Lake	.
Hawthorne Place²	Sangamon	.
Hayes^{1, 2}	Douglas	.
Haynes²	Sangamon	.
Haypress²	Greene	.
Hazel Crest²	Cook	.
Hazel Dell^{1, 2}	Cumberland	.
Hazel Green²	Cook	.
Hazel's Settlement⁵	Pope	.
Hazelhurst^{1, 2}	Carroll	.
Head of Apple Creek⁵	Morgan	.
Head of Apple River⁵	Jo Daviess	.
Head of Richland⁵	Sangamon	.
Head of Silver Creek⁵	Madison	.
Head of Wood River⁵	Macoupin	.
Healey¹	Livingston	.
Heapsville²	Henderson	.
Heartville²	Effingham	.
Heatherfield²	Grundy	.
Heathsville^{1, 2}	Crawford	.
Heaton²	Vermilion	.
Heaton Park²	Kane	.
Hebron^{1, 2}	McHenry	.
Hecker^{1, 2}	Monroe	.
Hedgerow²	Kane	.
Hedgewood²	McLean	.
Hegeler²	Bureau	.
Hegeler²	Vermilion	.
Hegewisch^{1, 2}	Cook	.
Heilsburgh¹	Fayette	.
Helena²	Lawrence	.
Helm²	Marion	.
Helmar²	Kendall	.
Heman²	Macon	.
Henderson (Settlement⁵)^{1, 2}	Knox	.
Henderson²	Macoupin	.
Henderson Grove²	Knox	.
Henderson Station¹⁵	Bond	aka Smithboro¹⁵
Hendrix^{1, 2}	McLean	.
Henkel²	Lee	.
Hennepin^{1, 2}	Putnam	.
Henning^{1, 2}	Vermilion	.
Henry^{1, 2}	Marshall	.
Henton^{1, 2}	Shelby	.
Herald^{1, 2}	White	.
Herbert^{1, 2}	Boone	.
Herborn^{1, 2}	Shelby	.
Heritage West²	Kane	.
Hermon^{1, 2}	Knox	.
Herod²	Pope	.
Herrick^{1, 2}	Shelby	.
Herrin (Junction)^{1, 2}	Williamson	.
Herscher^{1, 2}	Kankakee	.
Hersman^{1, 2}	Brown	.
Hervey City^{1, 2}	Macon	.
Hettick^{1, 2}	Macoupin	.
Hewittville²	Christian	Taylorville twp
Heyworth^{1, 2}	McLean	.
Hickman^{1, 2}	Iroquois	.
Hickory Corners²	Franklin	.
Hickory Corners²	Lake	.
Hickory Creek PO⁵	Fayette	.
Hickory Grove²	Adams	.
Hickory Grove⁵	Bond	.
Hickory Grove^{1, 2}	Carroll	.
Hickory Grove⁶	Christian	post office
Hickory Grove²	Greene	.
Hickory Hill^{1, 2}	Marion	.
Hickory Hill Settlement⁵	Wayne	.
Hickory Hills²	Cook	.
Hickory Hills²	Henry	.
Hickory Point²	Woodford	.
Hickory Ridge¹	Hancock	.
Hickory Ridge²	Ogle	.
Hicks^{1, 2}	Hardin	.
Hicks Corners²	Bureau	.
Hidalgo^{1, 2}	Jasper	.
Hidden Hill²	Kane	.
Hidden Lakes²	Kane	.
Higgin's Settlement⁵	Crawford	.
Higginsville^{1, 2}	Vermilion	.
High Point²	Kane	.
High Prairie⁵	St. Clair	.
Highland^{1, 2}	Madison	.
Highland⁵	Pike	.
Highland Haven²	Kane	.
Highland Hills²	DuPage	.
Highland Park^{1, 2}	Lake	.
Highland Prairie²	McHenry	historical
Highland Town²	Grundy	historical
Highland Township¹³	Grundy	.
Highmoor²	Lake	.
Highsmith's Settlement⁵	Crawford	.
Highway Village²	Tazewell	.
Highwood²	Lake	.
Hildreth^{1, 2}	Edgar	.
Hill^{1, 2}	Effingham	.
Hill Top^{1, 2}	Menard	.
Hill's Fort or Hill's Station¹⁵	Bond	first county seat of justice in 1817¹⁵
Hillcrest²	Ogle	.
Hillerman^{1, 2}	Massac	.
Hillery^{1, 2}	Vermilion	.
Hills Grove^{1, 2}	McDonough	historical
Hillsboro^{1, 2}	Montgomery	.
Hillsdale^{1, 2}	Rock Island	.
Hillside^{1, 2}	Cook	.
Hillside Manor²	Kankakee	.
Hilltop²	St. Clair	.
Hillview²	Greene	.
Himrod²	Vermilion	.
Hinckley^{1, 2}	DeKalb	.
Hindsboro^{1, 2}	Douglas	.
Hines²	Cook	.
Hinsdale^{1, 2}	DuPage	.
Hinton¹	Vermilion	.
Hissong¹	Fayette	.
Hites¹	Coles	.
Hitesville⁵	Coles	.
Hitt^{1, 2}	Carroll	.
Hitt^{1, 2}	La Salle	.
Hodge's Park^{1, 2}	Alexander	.
Hodgeville²	Pope	.
Hodgkins²	Cook	.
Hoffman^{1, 2}	Clinton	.
Hoffman Estates²	Cook	.
Hogue Town²	Clark	.
Holbrook²	Cook	.
Holcomb^{1, 2}	Ogle	.
Holcombville Corners²	McHenry	.
Holden²	Perry	.
Holder^{1, 2}	McLean	.
Holderman's Grove⁵	La Salle	.
Holiday Hills²	McHenry	.
Holiday Shores²	Madison	.
Holland²	Effingham	.
Holland's Grove⁵	Tazewell	.
Holland's Grove PO⁵	Washington	.
Holliday^{1, 2}	Fayette	.
Hollis^{1, 2}	Peoria	.
Hollowayville^{1, 2}	Bureau	.
Hollywood Heights²	St. Clair	.
Holmes²	Tazewell	.
Holmes Corner²	Pope	.
Holts¹	Perry	.
Homan⁶	Adams	.
Homberg²	Pope	.
Home¹	Wayne	.
Homer^{1, 2, 6}	Champaign	.
Homer Glen²	Will	.
Homeward Hill²	Kane	.
Homewood^{1, 2}	Cook	.
Honey Bend^{1, 2}	Montgomery	.
Honey Creek¹⁴	Adams	.
Honey Creek^{1, 2}	Ogle	.
Honey Creek Township¹⁴	Adams	.
Hoodville^{1, 2}	Hamilton	.
Hook¹	Jefferson	.
Hookdale^{1, 2}	Bond	.
Hooper²	Iroquois	.
Hoopeston^{1, 2}	Vermilion	.
Hooppole^{1, 2}	Henry	.
Hoosier (Prairie)^{1, 2}	Clay	.
Hope^{1, 2}	Vermilion	.
Hope Mines¹	Tazewell	.
Hopedale^{1, 2}	Tazewell	.
Hopewell^{1, 2}	Marshall	.
Hopkins Park^{1, 2}	Kankakee	.
Hopper (Hopper's Mills)^{1, 2}	Henderson	.
Horace^{1, 2}	Edgar	.
Horatio Gardens^{1, 2}	Lake	.
Hord^{1, 2}	Clay	.
Hornsby^{1, 2}	Macoupin	.
Horse Prairie²	Jefferson	historical
Horseshoe²	Saline	.
Horton^{1, 2}	Pike	.
Houston¹⁴	Adams	.
Houston^{1, 2}	Randolph	.
Houston Township¹⁴	Adams	.
Houstonville⁶	Champaign	post office
Howard²	Fulton	.
Howard District²	Cook	.
Howard's Settlement⁵	Madison	.
Howard's Settlement⁵	Pope	.
Howards Point²	Fayette	historical
Howardsville¹	Stephenson	.
Howardton²	Jackson	.
Hoxey's Settlement⁵	Madison	.
Hoyleton^{1, 2}	Washington	.
Hubbard²	Wayne	.
Hubbard Woods²	Cook	.
Hubbard Woods²	Marion	.
Hubly²	Menard	.
Hudgens²	Williamson	.
Hudson^{1, 2}	McLean	.
Huegely²	Washington	.
Huey('s Settlement⁵)^{1, 2}	Clinton	.
Huffaker²	Sangamon	.
Huffmanville²	Edgar	.
Hugh's Settlement⁵	Alexander	.
Hughes^{1, 2}	Edgar	.
Hugo^{1, 2}	Douglas	.
Hull^{1, 2}	Pike	.
Humboldt^{1, 2}	Coles	.
Hume^{1, 2}	Edgar	.
Humm Wye²	Hardin	.
Humrick^{1, 2}	Vermilion	.
Hunt City^{1, 2}	Jasper	.
Hunt Corners²	Stephenson	.
Hunter^{1, 2}	Boone	.
Huntley^{1, 2}	McHenry	.
Huntsville^{1, 2}	Schuyler	.
Hurlbut twp²	Logan	.
Huron⁵	Sangamon	.
Hurricane^{1, 2}	Greene	.
Hurricane (Settlement⁵)¹	Montgomery	.
Hurricane Point^U	Logan	.
Hurst²	Williamson	.
Hustle²	Vermilion	.
Hutchen's Settlement⁵	Perry	.
Hutchins Park²	Winnebago	.
Hutsonville^{1, 2}	Crawford	.
Hutton^{1, 2}	Coles	.
Ideal^{1, 2}	Carroll	.
Idlewild²	Lake	.
Idlewood^{1, 2}	Jefferson	.
Idylside²	Will	.
Iles^{1, 2}	Sangamon	.
Illiana^{1, 2}	Edgar	historical
Illiana²	Vermilion	.
Illiana Heights²	Kankakee	.
Illinois City^{1, 2}	Rock Island	.
Illinois City³	St. Clair	1823 Gazatteer
Illinois Prairie⁵	Calhoun	.
Illinois Town⁵	St. Clair	.
Illiopolis^{1, 2}	Sangamon	.
Imbs^{1, 2}	St. Clair	.
Ina²	Jefferson	.
Independence³	Bond	1823 Gazatteer
Independence²	Pike	.
Indian Creek⁵	Gallatin	.
Indian Creek²	Kane	.
Indian Creek²	Lake	.
Indian Head Park²	Cook	.
Indian Hill²	Cook	.
Indian Oaks²	Kankakee	.
Indian Prairie⁵	Wayne	.
Indian Spring²	Putnam	.
Indianola^{1, 2, 8}	Vermilion	formerly known as Dallas then Chillacotha
Industry^{1, 2}	McDonough	.
Ingalls Park²	Will	.
Ingalton¹	DuPage	.
Ingleside²	Lake	.
Ingleside Shore²	Lake	.
Ingraham^{1, 2}	Clay	.
Inlet²	Lee	.
Inman²	Gallatin	.
Inverness²	Cook	.
Iola^{1, 2}	Clay	.
Iowa Junction^{1, 2}	Henderson	.
Ipava^{1, 2}	Fulton	.
Irene^{1, 2}	Boone	.
Irish Grove^U	Logan	.
Irish Grove⁵	Sangamon	.
Irish Settlement⁵	Pope	.
Irish Settlement⁵	Randolph	.
Iron^{1, 2}	White	.
Irondale²	Cook	historical
Iroquois^{1, 2}	Iroquois	.
Iroquois City⁵	Iroquois	.
Irvin's Settlement⁵	Hamilton	.
Irving^{1, 2}	Montgomery	.
Irvington^{1, 2}	Washington	.
Irwin^{1, 2}	Kankakee	.
Irwins Park²	Sangamon	.
Isabel^{1, 2}	Edgar	.
Island¹	Lawrence	.
Island Grove²	Jasper	.
Island Grove²	Jasper	historical
Island Grove^{1, 2}	Sangamon	.
Island Lake²	Lake	.
Island View²	Montgomery	.
Itasca^{1, 2}	DuPage	.
Iuka^{1, 2}	Marion	.
Ivanhoe^{1, 2}	Lake	.
Ivesdale^{1, 2, 6}	Champaign	.
Ivy (Landing)^{1, 2}	Monroe	.
Ivy Heights²	Madison	.
Jackson¹⁴	Adams	name changed to Concord in 1850¹⁴
Jackson²	Lawrence	.
Jackson Grove⁵	Will	.
Jackson's Grove PO⁵	Fulton	.
Jacksonville^{1, 2}	Morgan	.
Jacksonville⁵	St. Clair	.
Jacob²	Jackson	.
Jalapa²	Greene	.
Jamaica²	Vermilion	.
Jamesburg²	Vermilion	.
Jamestown^{1, 2}	Clinton	.
Jamestown²	Hamilton	historical
Jamestown²	Perry	.
Janesville¹	Coles	.
Janesville²	Cumberland	.
Jaques²	Brown	.
Jarvis's Settlement⁵	Warren	.
Jefferson City²	Hamilton	historical
Jefferson City²	Jefferson	.
Jefferson Corners²	Whiteside	.
Jeffersonville¹	Wayne	.
Jeiseyville²	Christian	South Fork twp
Jenkins²	DeWitt	.
Jenkins²	Williamson	.
Jernigan's Bridge^U	Christian	.
Jerome²	Sangamon	.
Jerseyville⁵	Greene	.
Jerseyville^{1, 2}	Jersey	.
Jess²	Sangamon	.
Jewett^{1, 2}	Cumberland	.
Jimtown²	Champaign	.
Jimtown²	Fayette	.
Job's Settlement⁵	McDonough	.
Joetta^{1, 2}	Hancock	.
Johannisburg^{1, 2}	Washington	.
Johnsburg^{1, 2}	McHenry	.
Johnson's Settlement⁵	Clinton	.
Johnsons^U	Logan	.
Johnsons Siding²	Logan	.
Johnsonsport³	Madison	1823 Gazetteer
Johnsonville²	Vermilion	.
Johnsonville^{1, 2}	Wayne	.
Johnston City²	Williamson	.
Johnstown^{1, 2}	Cumberland	.
Joliet^{1, 2}/Juliett⁵	Will	.
Jones²	Coles	.
Jones's Creek PO⁵	Randolph	.
Jones Ferry⁶	Calhoun	post office
Jones Ridge²	Jackson	.
Jonesboro^{1, 2, 3}	Union	1823 Gazetteer
Jonesville²	La Salle	.
Jonesville^{1, 2}	Winnebago	.
Joppa^{1, 2}	Massac	.
Joppa Junction²	Johnson	.
Jordan's Grove²	Randolph	post office, historical
Jordan's Prairie⁵	Jefferson	.
Jordan's Settlement⁵	Jasper	.
Jordanville^{1, 2}	Morgan	historical
Joslin^{1, 2}	Rock Island	.
Joy^{1, 2}	Mercer	.
Joy Prairie²	Morgan	.
Jubilee¹	Peoria	historical
Judson²	Kankakee	historical
Jules^{1, 2}	Cass	.
Julien Hill^{1, 2}	Pope	.
Juliett⁵	Will	aka Joliet
Junction^{1, 2}	Gallatin	.
Junction City^{1, 2}	Marion	.
Justice²	Cook	.
Kahm²	Greene	.
Kampenville^{1, 2}	Randolph	.
Kampsville^{1, 2}	Calhoun	.
Kane^{1, 2}	Greene	.
Kane Post Office⁵	Greene	.
Kaneville^{1, 2}	Kane	.
Kangley^{1, 2}	La Salle	.
Kankakee^{1, 2}	Kankakee	.
Kansas^{1, 2}	Edgar	.
Kaolin²	Union	.
Kappa^{1, 2}	Woodford	.
Karber's Ridge^{1, 2}	Hardin	.
Karnak²	Pulaski	.
Kasbeer^{1, 2}	Bureau	.
Kaser^{1, 2}	Greene	.
Kaskaskia^{1, 2, 3}	Randolph	1823 Gazetteer
Katy Did²	Livingston	.
Kaufman^{1, 2}	Madison	.
Keach's Landing⁶	Jersey	.
Kedron^{1, 2}	Gallatin	.
Kedron²	Henry	historical
Keeler²	Fulton	historical
Keene¹⁴	Adams	.
Keene Township¹⁴	Adams	.
Keenes^{1, 2}	Wayne	.
Keenesville^{1, 2}	Wayne	.
Keeneyville²	DuPage	.
Keensburg^{1, 2}	Wabash	.
Kegley²	Franklin	.
Keithsburg^{1, 2}	Mercer	.
Kell²	Marion	.
Keller^{1, 2}	Peoria	.
Kellerville^{1, 2}	Adams	.
Kelley Corners²	Lake	.
Kelleys²	Williamson	.
Kellogg²	Randolph	.
Kellyville²	Vermilion	.
Kelsey^{1, 2}	Mason	.
Kemp^{1, 2}	Douglas	.
Kemper^{1, 2}	Jersey	.
Kempside²	Washington	.
Kempton^{1, 2}	Ford	.
Kendall Hill²	Madison	.
Kenilworth^{1, 2}	Cook	.
Kennedy²	Lake	.
Kenner^{1, 2}	Clay	.
Kenney^{1, 2}	DeWitt	.
Kensington^{1, 2}	Cook	.
Kent^{1, 2}	Stephenson	.
Kentland²	Kendall	.
Kenton²	Cook	.
Kentucky²	Edgar	.
Kenwood²	Champaign	.
Keptown²	Effingham	.
Kernan^{1, 2}	La Salle	.
Kerrick²	McLean	.
Kewanee^{1, 2}	Henry	.
Keyesport^{1, 2}	Clinton	.
Keyesport Landing²	Bond	.
Keys (Settlement)²	Sangamon	1823 Gazetteer
Kibbie^{1, 2}	Crawford	.
Kickapoo^U	Logan	.
Kickapoo^{1, 2}	Peoria	.
Kickapoo Siding^U	Logan	.
Kidd²	Monroe	.
Kidley^{1, 2}	Edgar	.
Kilbourne^{1, 2}	Mason	.
Kildeer²	Lake	.
Kincaid²	Christian	South Fork twp
Kinderhook^{1, 2}	Pike	.
King²	Greene	.
Kingdom²	Lee	.
Kingman^{1, 2}	Shelby	.
Kings²	Coles	.
Kings^U	Logan	.
Kings^{1, 2}	Ogle	.
Kings Island²	Lake	.
Kings Mill²	Kane	.
Kingston^{2, 6}	Adams	named after one of its founders, James King; laid out in 1836 on section 21¹⁴
Kingston^{1, 2}	DeKalb	.
Kingston Mines^{1, 2}	Peoria	.
Kinmundy^{1, 2}	Marion	.
Kinsawl's Settlement⁵	Gallatin	.
Kinsman^{1, 2}	Grundy	.
Kirkland^{1, 2}	DeKalb	.
Kirksville²	Moultrie	.
Kirkwood^{1, 2}	Warren	.
Kisch²	Cass	.
Kise Crossing²	Monroe	.
Kishwaukee^{1, 2}	Winnebago	.
Kishwaukee Glen²	Winnebago	.
Kittredge^{1, 2}	Carroll	.
Klines Corner²	Wayne	.
Klondike²	Alexander	.
Klondike²	Lake	.
Knapp²	Sangamon	.
Knob Hill²	Kendall	.
Knoll Creek West²	Kane	.
Knollwood²	Lake	.
Knollwood²	Sangamon	.
Knox^{1, 2}	Knox	.
Knox Settlement⁵	Putnam	.
Knoxville^{1, 2}	Knox	.
Koster^{1, 2}	Kankakee	.
Kramm^{1, 2}	Peoria	.
Kritesville²	Calhoun	.
Kruger (Siding)²	Logan	.
Kuhn Station²	Madison	.
Kumler^{1, 2}	McLean	.
L'Erable^{1, 2}	Iroquois	.
La Clede^{1, 2}	Fayette	.
La Crosse^{1, 2}	Hancock	.
La Fox^{1, 2}	Kane	post office
La Grange²	Brown	.
La Grange^{1, 2}	Cook	.
La Grange Park²	Cook	.
La Grange Township¹⁶	Bond	.
La Harpe^{1, 2}	Hancock	.
La Hogue^{1, 2}	Iroquois	.
La Moille^{1, 2}	Bureau	.
La Prairie^{1, 2}	Adams	.
La Prairie Center^{1, 2}	Marshall	.
La Rose^{1, 2}	Marshall	.
La Rue²	Union	.
La Salle^{1, 2}	La Salle	.
La Salle Prairie⁵	Peoria	.
La Vantum⁷	La Salle	aka Utica; Indian town
Lace^{1, 2}	DuPage	.
Lacon^{1, 2}	Marshall	.
Lacon⁵	Putnam	.
Ladd^{1, 2}	Bureau	.
Laenna twp²	Logan	.
Lafayette¹⁴	Adams	name changed to Lima in 1850¹⁴
Lafayette^{1, 2}	Stark	.
Lake²	Kankakee	.
Lake Barrington²	Lake	.
Lake Bluff^{1, 2}	Lake	also historical post office
Lake Catherine²	Lake	.
Lake Charlotte²	Kane	.
Lake City^{1, 2}	Moultrie	.
Lake Corner²	Lake	.
Lake Creek²	Franklin	.
Lake Creek¹	Williamson	.
Lake Crest²	Williamson	.
Lake Estates²	Williamson	.
Lake Forest^{1, 2}	Lake	.
Lake Fork^{1, 2}	Logan	Goshen twp
Lake in the Hills²	McHenry	.
Lake Ka-ho²	Macoupin	.
Lake of the Woods²	Champaign	.
Lake Piasa²	Jersey	.
Lake (Siding)^{1, 2}	St. Clair	.
Lake Side¹	Cook	.
Lake Summerset²	Winnebago	.
Lake Villa^{1, 2}	Lake	.
Lake Zurich^{1, 2}	Lake	.
Lakemoor²	McHenry	.
Lakeview²	Madison	.
Lakeview Acres²	Madison	.
Lakewood²	DuPage	.
Lakewood²	Mason	.
Lakewood²	McHenry	.
Lakewood^{1, 2}	Shelby	.
Lakewood Shores²	Will	.
Lamaster's Settlement⁵	Schuyler	.
Lamb^{1, 2}	Hardin	.
Lamone Village²	McDonough	.
Lanark^{1, 2, 6}	Carroll	.
Lancaster²	Peoria	.
Lancaster²	Wabash	.
Lancaster⁸	Vermillion	abandoned; "It was laid out by Noah Bixler, July 17, 1832, on the north half of the east half of the northeast quarter of section six in township 19, north of range 9 east. The plat was recorded July 18, 1832. Whether this town ever was off paper is not known."
Landes^{1, 2}	Crawford	.
Lane^{1, 2}	DeWitt	.
Lanesville^{1, 2}	Sangamon	.
Langham²	Grundy	.
Langley²	Bureau	.
Langley^U	Christian	Taylorville twp
Langleyville²	Christian	.
Lansing^{1, 2}	Cook	.
Lanton²	Moultrie	.
LaPlace^{1, 2}	Piatt	.
Larchland^{1, 2}	Warren	.
Larkdale²	Macon	.
Latham^{1, 2}	Logan	.
Latham Park^{1, 2}	Winnebago	.
Latona^{1, 2}	Jasper	.
Laughton's⁵	Cook	.
Laur¹	Jefferson	.
Laura^{1, 2}	Peoria	.
Laurette^{1, 2}	McLean	.
Lawler^{1, 2}	Gallatin	.
Lawn Ridge^{1, 2}	Marshall	.
Lawndale^{1, 2}	Logan	.
Lawrence^{1, 2}	McHenry	.
Lawrenceville^{1, 2, 3}	Lawrence	1823 Gazetteer
Lawton^U	Grundy	aka S. Wilmington
Layfield²	Perry	.
Layman^U	Logan	.
Le Roy^{1, 2}	McLean	.
Leaf River^{1, 2}	Ogle	.
Leaman Station^{1, 2}	Fulton	historical
Leamington^{1, 2}	Gallatin	.
Leanderville^{1, 2}	Randolph	.
Lebanon^{1, 2, 3}	St. Clair	1823 Gazetteer
Leclaire^{1, 2}	Madison	.
Ledford^{1, 2}	Saline	.
Lee^{1, 2}	Lee	.
Lee^U	Logan	.
Lee Center^{1, 2}	Lee	.
Lee's Place⁷	Cook	aka Hardscrabble
Leeds²	La Salle	.
Leesburg^{1, 2}	Fulton	.
Leesburg⁸	Vermilion	abandoned, laid out by Joseph Smith, located on a part of the northwest quarter of the northwest quarter of section No. 14, in town No. 18, north of R. No. 11, W.; surveyed by Uriah M. McMillen, May 1, 1850
Leesburgh^U	Logan	.
Leesburgh⁵	Montgomery	.
Leesville²	Kankakee	.
Lehigh²	Kankakee	.
Leisure City	Pope	.
Leithton^{1, 2}	Lake	.
Leisure City²	Pope	.
Leithton^{1, 2}	Lake	.
Leland^{1, 2}	La Salle	.
Leland Grove²	Sangamon	.
Lemens²	Monroe	.
Lementon^{1, 2}	St. Clair	.
Lemmon²	Sangamon	.
Lemont^{1, 2}	Cook	.
Lena^{1, 2}	Stephenson	.
Lenzburg^{1, 2}	St. Clair	.
Leon Corners^{1, 2}	Whiteside	.
Leonard²	Iroquois	.
Leonore^{1, 2}	La Salle	.
Lerna^{1, 2}	Coles	.
Lester^{1, 2}	Marion	.
Level Acres²	Henry	.
Leverett^{1, 2}	Champaign	.
Levings²	Pulaski	.
Lewis Corner²	Pope	.
Lewis's Settlement⁵	Pope	.
Lewisburg²	Menard	.
Lewistown^{1, 2}	Fulton	.
Lexington²	Edwards	historical
Lexington^{1, 2}	McLean	.
Liberty^{1, 2}	Adams	.
Liberty⁵	Randolph	.
Liberty²	Saline	.
Liberty Hill²	Cumberland	.
Liberty Prairie¹	Madison	.
Libertyville^{1, 2}	Lake	.
Lick Creek^{1, 2}	Union	.
Lidice²	Will	.
Lightsville²	Ogle	.
Lilly^{1, 2}	Tazewell	.
Lillyville²	Cumberland	.
Lily Cache²	Will	.
Lily Lake^{1, 2}	Kane	.
Lilymoor²	McHenry	.
Lima^{1, 2}	Adams	formerly known as Lafayette¹⁴
Lima Township¹⁴	Adams	.
Limerick^{1, 2}	Bureau	.
Lincoln^{1, 2}	Logan	.
Lincoln⁵	Macoupin	.
Lincoln Estates²	Will	.
Lincoln Green¹	Johnson	historical
Lincoln Heights²	Lee	.
Lincoln Hill^U	Logan	.
Lincoln Hills²	Adams	.
Lincoln Square²	Cook	historical
Lincolnshire²	Lake	.
Lincolnwood²	Cook	.
Lincolnwood Hills²	Will	.
Linden Bottom⁵	Greene	aka Rich Woods⁵
Lindenhurst²	Lake	.
Lindenwood^{1, 2}	Ogle	.
Lindley's Fort¹⁵	Bond	historic
Linn¹	Wabash	.
Lintner^{1, 2}	Piatt	.
Lipsey²	Coles	.
Lis^{1, 2}	Jasper	.
Lisbon^{1, 2}	Kendall	.
Lisbon⁵	La Salle	.
Lisbon Center²	Kendall	.
Lisle^{1, 2}	DuPage	.
Litchfield²	Kankakee	.
Litchfield^{1, 2}	Montgomery	.
Literberry^{1, 2}	Morgan	.
Lithia^{1, 2}	Shelby	.
Little America²	Fulton	.
Little Indian^{1, 2}	Cass	.
Little Ireland²	McDonough	historical
Little Oklahoma²	Whiteside	.
Little Rock^{1, 2}	Kendall	.
Little Rock²	La Salle	historical
Little York^{1, 2}	Warren	.
Littleton^{1, 2}	Schuyler	.
Littleville^{1, 2}	McLean	historical
Lively Grove^{1, 2}	Washington	.
Liverpool^{1, 2}	Fulton	.
Livingston²	Clark	.
Livingston²	Madison	.
Loami^{1, 2}	Sangamon	.
Lockhaven²	Jersey	.
Lockport^{1, 2}	Will	.
Lockwood's Settlement⁵	Hamilton	.
Lockwood's Settlement⁵	Warren	.
Locust Grove^{1, 2}	Franklin	historical
Loda^{1, 2}	Iroquois	.
Lodemia^{1, 2}	Livingston	.
Lodge^{1, 2}	Piatt	.
Log Cabin Camp²	Kankakee	.
Logan^{1, 2}	Edgar	.
Logan's Settlement⁵	Gallatin	.
Logansburgh²	Wabash	historical
Logansport^{1, 2}	Hamilton	historical
Lollard's Settlement⁵	Gallatin	.
Lomax^{1, 2}	Henderson	.
Lombard^{1, 2}	DuPage	.
Lombard^U	Stark	Osceola twp
Lombardville^{1, 2}	Stark	aka Osceola; also listed as Lombardy
London Mills^{1, 2}	Fulton	.
Lone Tree^{1, 2}	Henderson	.
Lone Tree Corners²	Bureau	.
Long Branch²	Mason	.
Long Branch^{1, 2}	Saline	.
Long Creek^{1, 2}	Macon	.
Long Grove^{1, 2}	Lake	.
Long Lake²	Lake	.
Long Lake Station^{1, 2}	Madison	.
Long Point^{1, 2}	Livingston	.
Long Point^U	Logan	.
Long Prairie⁵	Jefferson	.
Long Prairie¹	Wayne	.
Long Shore Park²	Peoria	.
Longview²	Champaign	.
Longview Estates²	Kane	.
Loogootee^{1, 2}	Fayette	.
Loon Lake^{1, 2}	Lake	.
Loose Pulley Junction²	Ogle	.
Loraine^{1, 2}	Adams	.
Loran^{1, 2}	Stephenson	.
Lorenzo^{1, 2}	Will	.
Loretto²	Livingston	.
Lorton's Prairie⁵	Greene	.
Lost Nation²	Ogle	.
Lostant^{1, 2}	La Salle	.
Lotus²	Champaign	.
Lotus Woods²	Lake	.
Louden City¹	Fayette	.
Louisville^{1, 2}	Clay	.
Love²	Bureau	.
Loves Corner²	Hardin	.
Loves Park²	Winnebago	.
Lovilla²	Hamilton	.
Lovington^{1, 2}	Moultrie	.
Low Point^{1, 2}	Woodford	.
Lowder^{1, 2}	Sangamon	.
Lowell^{1, 2}	La Salle	.
Lower Hills¹	Hamilton	.
Loxa^{1, 2}	Coles	.
Loyd^{1, 2}	Menard	.
Lucas²	Logan	.
Ludlow^{1, 2, 6}	Champaign	.
Lumaghi Heights²	Madison	.
Lusk^{1, 2}	Pope	.
Luther²	Mason	.
Lynchburg²	Jefferson	historical
Lyndon^{1, 2}	Whiteside	.
Lynn Center^{1, 2}	Henry	.
Lynnville^{1, 2}	Morgan	.
Lynwood²	Cook	.
Lynwood²	Kendall	.
Lyons^{1, 2}	Cook	.
Lytleville^{1, 2}	McLean	historical
Mabel²	Edgar	.
Macedonia²	Franklin	.
Macedonia¹	Hamilton	.
Machesney Park²	Winnebago	.
Mackey^U	Logan	.
Mackinaw/Mackinau^{1, 2, 5}	Tazewell	.
Mackinaw Dells²	Woodford	.
Mackville²	Piatt	.
Macomb^{1, 2, 5}	McDonough	.
Macon^{1, 2}	Macon	.
Macoupin Settlement⁵	Greene	.
Macoupin^{1, 2}	Macoupin	.
Maddux Settlement⁵	Clinton	.
Madison^U	Logan	.
Madison^{1, 2, 3}	Madison	1823 Gazetteer
Madison Station²	Madison	.
Madonnaville^{1, 2}	Monroe	.
Maeystown^{1, 2}	Monroe	.
Magnet²	Coles	.
Magnolia^{1, 2}	Putnam	.
Magnolia Corner²	Fayette	.
Mahomet^{1, 2, 6}	Champaign	.
Maine Township¹³	Grundy	.
Maizetown²	Vermilion	.
Makanda^{1, 2}	Jackson	.
Malden^{1, 2}	Bureau	.
Mallard Lake North²	Kane	.
Mallard Lake South²	Kane	.
Malta^{1, 2}	DeKalb	.
Malvern^{1, 2}	Whiteside	.
Mammoth Springs²	DuPage	.
Manchester⁵	Morgan	.
Manchester^{1, 2}	Scott	.
Manhattan^{1, 2}	Will	.
Manilus^{1, 2}	Bureau	.
Manito^{1, 2}	Mason	.
Manix^{1, 2}	Madison	post office, historical
Manley^{1, 2}	Fulton	.
Mannon^{1, 2}	Mercer	.
Mansfield^{1, 2}	Piatt	.
Manteno^{1, 2}	Kankakee	.
Mantua³	Hamilton	1823 Gazetteer
Mantua⁵	White	.
Manville^{1, 2}	Livingston	.
Maple²	Madison	.
Maple Grove^{1, 2}	Edwards	.
Maple Park^{1, 2}	Kane	.
Maple Point²	Cumberland	.
Maples Mill^{1, 2}	Fulton	.
Mapleton^{1, 2}	Peoria	.
Maplewood Park²	St. Clair	.
Maquon^{1, 2}	Knox	.
Marblehead^{1, 2}	Adams	.
Marbletown^{1, 2}	Fulton	.
Marcelline^{1, 2}	Adams	.
Marchant's Settlement⁵	Fulton	.
Marcoe²	Jefferson	.
Marcus^{1, 2}	Carroll	.
Marengo^{1, 2}	McHenry	.
Marietta^{1, 2}	Fulton	.
Marigold²	Randolph	.
Marine (Settlement)^{1, 2, 3, 5}	Madison	1823 Gazetteer
Marion²	Edwards	.
Marion^{1, 2}	Williamson	.
Marion⁸	Vermilion	surveyed by Dan Beckwith (county surveyor), May 23, 1835; it was laid out by Alexander Bailey, but had no growth
Marissa^{1, 2}	St. Clair	.
Mark²	Putnam	.
Markham²	Cook	.
Markham's Settlement⁵	Macoupin	.
Markham^{1, 2}	Morgan	.
Markham City^{1, 2}	Jefferson	.
Marley^{1, 2}	Edgar	.
Marley^{1, 2}	Will	.
Marlow^{1, 2}	Jefferson	.
Maroa^{1, 2}	Macon	.
Marquette²	Bureau	.
Marquette Heights²	Tazewell	.
Marseilles^{1, 2, 5}	La Salle	.
Marshall^{1, 2, 5}	Clark	.
Marshall Landing²	Calhoun	.
Marshall's Ferry¹	White	.
Marshall's Prairie Settlement⁵	Jackson	.
Marston^{1, 2}	Mercer	.
Martin^U	Logan	.
Martin²	Mercer	historical
Martin's Creek & Settlement⁵	Wayne	.
Martin's Store^{1, 2}	Hamilton	historical
Martinsburg^{1, 2}	Pike	.
Martinsville^{1, 2}	Clark	.
Martinton^{1, 2}	Iroquois	.
Mary Meadows²	Kane	.
Marydale²	Clinton	.
Maryland^{1, 2}	Ogle	.
Maryland Place²	Madison	.
Maryville²	Madison	.
Marywood²	Kane	.
Mascoutah^{1, 2}	St. Clair	.
Mason^{1, 2}	Effingham	.
Mason²	Union	.
Mason City^{1, 2}	Mason	.
Mason's Prairie & Settlement⁵	Lawrence	.
Massac City²	Massac	.
Massbach^{1, 2}	Jo Daviess	.
Matanzas^{1, 2}	Mason	.
Matanzas Beach²	Mason	.
Matherville²	Mercer	.
Matteson^{1, 2}	Cook	.
Matthews²	Perry	.
Matthews Junction²	Jackson	.
Mattoon^{1, 2}	Coles	.
Maud^{1, 2}	Wabash	.
Maunie²	White	.
Maxwell^{1, 2}	Peoria	.
Maxwell^{1, 2}	Sangamon	historical
Mayberry^{1, 2}	Wayne	.
Mayfair²	Tazewell	.
Maynardsville⁶	Calhoun	post office
Mays^{1, 2}	Edgar	aka May's Station??
Maysville^{2, 5}	Clay	.
Maysville^{1, 2}	Pike	.
Maytown²	Lee	.
Mayview^{1, 2}	Champaign	.
Maywood^{1, 2}	Cook	.
Mazon^{1, 2}	Grundy	aka Old Mazon, Mazonville
Mazon Township¹³	Grundy	.
Mazonia^{1, 2}	Grundy	.
McAdam's Settlement⁵	Bond	.
McCall^{1, 2}	Hancock	.
McClay Orchard²	Greene	.
McClure^{1, 2}	Alexander	.
McClusky^{1, 2}	Jersey	.
McConnell^{1, 2}	Stephenson	.
McCook²	Cook	.
McCord's Settlement⁵	Bond	.
McCormack's Settlement⁵	Pope	.
McCormick^{1, 2}	Pope	.
McCormickville²	Cook	.
McCown²	Edgar	.
McCreery's Settlement⁵	Franklin	.
McCullom Lake²	McHenry	.
McDowell^{1, 2}	Livingston	.
McEaver's Settlement⁵	Clinton	.
McFatridge's Settlement⁵	Johnson	.
McGirr²	DeKalb	.
McHenry^{1, 2, 5}	McHenry	.
McIntosh Settlement²	White	historical
McKee Township¹⁴	Adams	.
McKeen^{1, 2}	Clark	.
McKinley²	Washington	.
McKinley Park²	Cook	.
McLean^{1, 2}	McLean	.
McLeansboro^{1, 2, 3}	Hamilton	1823 Gazetteer
McNabb²	Putnam	.
McNulta²	McLean	.
McQueen^{1, 2}	Kane	.
McVey^{1, 2}	Macoupin	.
Meacham¹	DuPage	.
Meacham's Grove⁵	Cook	aka Salem
Meadow Heights²	Madison	.
Meadowbrook²	Madison	.
Meadows^{1, 2}	McLean	.
Mechanicsburg^{1, 2, 5}	Sangamon	.
Media^{1, 2}	Henderson	.
Medinah²	DuPage	.
Medora^{1, 2}	Macoupin	.
Meeks²	Vermilion	.
Melody²	Lake	.
Melrose¹⁴	Adams	.
Melrose^{1, 2, 5}	Clark	.
Melrose Park^{1, 2}	Cook	.
Melrose Township¹⁴	Adams	.
Melugin Grove²	Lee	historical
Melville^{1, 2}	Madison	.
Melvin²	Ford	.
Melwood^{1, 2}	Edgar	.
Menard^{1, 2}	Randolph	.
Mendon^{1, 2}	Adams	.
Mendon Township¹⁴	Adams	.
Mendota^{1, 2}	La Salle	.
Menominee^{1, 2}	Jo Daviess	.
Meppen^{1, 2}	Calhoun	.
Meredith²	Kane	.
Meredosia^{1, 2}	Morgan	.
Meriden^{1, 2}	La Salle	.
Mermet²	Massac	.
Merna^{1, 2}	McLean	.
Merriam^{1, 2}	Wayne	.
Merrimac (Point)^{1, 2}	Monroe	.
Merrionette Park²	Cook	.
Merritt^{1, 2}	Scott	.
Metamora^{1, 2}	Woodford	.
Metcalf^{1, 2}	Edgar	.
Metropolis (City)^{1, 2}	Massac	.
Mettawa²	Lake	.
Meyer²	Adams	.
Meyer²	Franklin	.
Michael²	Calhoun	.
Michigan Beach²	Will	.
Mid City²	Greene	.
Middle Creek²	Hancock	.
Middle Fork⁵	Jefferson	.
Middle Grove^{1, 2, 5}	Fulton	.
Middlebury²	Kane	.
Middlecreek²	Kane	.
Middlepoint²	White	.
Middlesworth^{1, 2}	Shelby	.
Middleton²	Wayne	.
Middletown^{1, 2}	Logan	.
Middletown⁵	Sangamon	.
Midland City^{1, 2}	DeWitt	.
Midlothian²	Cook	.
Midway²	Christian	.
Midway²	Fulton	historical
Midway²	Madison	.
Midway²	Massac	.
Midway²	Tazewell	.
Midway²	Vermilion	.
Mier's Settlement⁵	Bond	.
Milan⁵	Calhoun	.
Milan^{1, 2}	Rock Island	.
Milan²	White	.
Mildred²	Sangamon	.
Miles Station^{1, 2}	Macoupin	.
Milford^{1, 2}	Iroquois	.
Mill Creek²	Adams	historical
Mill Creek^{1, 2}	Union	.
Mill Shoals^{1, 2}	White	.
Milla²	La Salle	.
Millbrig^{1, 2}	Jo Daviess	historical
Millbrook^{1, 2}	Kendall	.
Millburn^{1, 2}	Lake	.
Milledgeville^{1, 2}	Carroll	.
Miller²	St. Clair	.
Miller City²	Alexander	.
Miller's Settlement⁵	Alexander	.
Miller's Settlement⁵	Macon	.
Miller's Settlement⁵	Mercer	.
Milledgeville⁶	Carroll	.
Millersburg⁶	Bond	.
Millersburg⁶	Christian	post office
Millersburg^{1, 2}	Mercer	.
Millersville^{1, 2}	Christian	Locust twp
Millhurst²	Kendall	.
Millington^{1, 2}	Kendall	.
Mills Prairie^{1, 2}	Edwards	historical
Mills Township¹⁶	Bond	.
Millsdale^{1, 2}	Will	.
Millstadt^{1, 2}	St. Clair	.
Millstadt Junction^{1, 2}	Monroe	.
Millville²	Adams	historical
Millville²	Jo Daviess	.
Millville²	Macoupin	.
Milmine^{1, 2}	Piatt	.
Milne²	Shelby	.
Milo^{1, 2}	Bureau	.
Milroy^{1, 2}	Henderson	.
Milton²	Brown	historical
Milton²	Fulton	historical
Milton^{2, 3, 5}	Madison	historical; 1823 Gazetteer
Milton^{1, 2}	Pike	.
Milton²	Schuyler	historical
Milton²	Vermilion	historical
Mindale²	Schuyler	.
Mindale²	Tazewell	.
Mineral^{1, 2}	Bureau	.
Mineral City²	Hardin	historical
Mineral Springs²	Whiteside	historical
Minier^{1, 2}	Tazewell	.
Minonk^{1, 2}	Woodford	.
Minooka^{1, 2}	Grundy	aka Anoka
Mira^{1, 2}	Champaign	.
Missal^{1, 2}	Livingston	.
Missionfield^{1, 2}	Vermilion	.
Mitchell²	Franklin	.
Mitchell^{1, 2}	Madison	.
Mitchell's Settlement⁵	St. Clair	.
Mitchellsville^{1, 2}	Saline	.
Mitchie^{1, 2}	Monroe	.
Moccasin^{1, 2}	Effingham	.
Mode^{1, 2}	Shelby	.
Modena^{1, 2}	Stark	Toulon twp
Modesto^{1, 2}	Macoupin	.
Modoc^{1, 2}	Randolph	.
Moellenbrocks²	Madison	.
Mokena^{1, 2}	Will	.
Moline^{1, 2}	Rock Island	.
Momence^{1, 2}	Kankakee	.
Monaville²	Lake	.
Monee^{1, 2}	Will	.
Monica^{1, 2}	Peoria	.
Monk Hill^{5, 7}	Madison	built in 1704, sold in 1813; Monks returned to France⁷
Monmouth^{1, 2}	Warren	.
Monroe⁶	Cass	post office
Monroe³	Pike	1823 Gazetteer
Monroe⁸	Vermilion	abandoned; laid out on the southwest quarter of the Northwest quarter of section 36, T. 17, N. R. 11 W. It was surveyed and laid out by Stephen Nearfield, and J. W. Haworth. It was recorded May 4, 1837.
Monroe Center^{1, 2}	Ogle	.
Monroe City¹	Cook	.
Monroe City²	Monroe	.
Mont Station²	Madison	.
Montebello⁵	Hancock	.
Montecello⁵	Madison	.
Monterey⁶	Calhoun	.
Monterey^{1, 2}	Fulton	.
Montezuma^{1, 2}	Pike	.
Montgomery⁵	Adams	.
Montgomery^{1, 2}	Kane	.
Monticello^{1, 2}	Piatt	.
Montrose^{1, 2}	Effingham	.
Moonshine^{1, 2}	Clark	.
Moore's²	Pike	historical
Moore's Corner²	Vermilion	.
Moore's Settlement⁵	Monroe	.
Mooseheart²	Kane	.
Moran Corners²	Lake	.
Morea^{1, 2}	Crawford	.
Morehaven²	Winnebago	.
Morgan City^{1, 2}	Morgan	historical
Morgan Park¹	Cook	.
Morgans or Morgantown⁸	Vermilion	historical; "This town of Morgantown was laid out by Achilles Morgan, and subscribed to before Jacob Brazelton, Jr., July 23, 1830. Each and every lot in this town contained one fourth part of an acre, and had a front of four rods, and extended ten rods back. The public grounds were three fourths of an acre."
Morganville²	Jefferson	.
Moriah²	Clark	.
Moro^{1, 2}	Madison	.
Moronts²	Putnam	.
Morrelville^{1, 2}	Brown	.
Morris^{1, 2}	Grundy	aka Grundyville
Morris Township¹³	Grundy	.
Morrison²	Whiteside	.
Morrisonville^{1, 2, 6}	Christian	Ricks twp (originally part of Bear Creek Twp)
Morristown^{1, 2}	Henry	.
Morristown²	Winnebago	historical
Morse²	Stark	.
Morseville²	Jo Daviess	.
Mortimer^{1, 2}	Edgar	.
Morton^{1, 2}	Tazewell	.
Morton Grove^{1, 2}	Cook	.
Moscow²	Mason	historical
Moscow^{1, 2}	Union	.
Moss's Settlement⁵	Pope	.
Mossville^{1, 2}	Peoria	.
Moulton²	Stark	Essex twp
Mound City^{1, 2}	Pulaski	.
Mound Prairie³	Madison	1823 Gazetteer
Mound(s) Station^{1, 6}	Brown	.
Mounds^{1, 2}	Pulaski	.
Mt. Auburn^{1, 2, 6}	Christian	Mt. Auburn twp
Mt. Carbon^{2, 5}	Jackson	.
Mt. Carmel³	Edwards	1823 Gazetteer
Mt. Carmel^{1, 2, 5}	Wabash	.
Mt. Carroll^{1, 2, 6}	Carroll	.
Mt. Clare²	Macoupin	.
Mt. Erie^{1, 2}	Wayne	.
Mt. Fulcher²	Logan	.
Mt. Forest¹	Cook	.
Mt. Hope^U	Logan	.
Mt. Joy^{1, 2}	Logan	.
Mt. Morris^{1, 2}	Ogle	.
Mt. Olive^{1, 2}	Macoupin	.
Mt. Palatine²	La Salle	.
Mt. Palatine¹	Putnam	.
Mt. Pleasant⁶	Boone	.
Mt. Pleasant³	Greene	1823 Gazetteer
Mt. Pleasant⁵	St. Clair	.
Mt. Pleasant^{1, 2, 5}	Union	.
Mt. Prospect^{1, 2}	Cook	.
Mt. Pulaski^{1, 2}	Logan	.
Mt. Pulaski⁵	Sangamon	.
Mt. Sterling^{1, 2}	Brown	.
Mt. Sterling⁵	Schuyler	.
Mt. Vernon^{1, 2, 3, 5}	Jefferson	1823 Gazetteer
Mt. Vernon²	Kendall	.
Mt. Zion^{1, 2}	Macon	.
Mountain Glen^{1, 2}	Union	.
Moweaqua^U	Christian	Prairieton twp
Moweaqua^{1, 2}	Shelby	.
Mozier^{1, 2}	Calhoun	.
Mozier Landing²	Calhoun	.
Muddy²	Saline	.
Muddy Point⁵	Coles	.
Mulberry Grove^{1, 2, 5}	Bond	post office⁵; may have been originally known as Houston¹⁵
Mulberry Grove Township¹⁶	Bond	.
Mulkeytown^{1, 2}	Franklin	.
Muncie^{1, 2}	Vermilion	.
Mundelein²	Lake	.
Munger²	DuPage	.
Munger²	Pike	.
Munson (Station)^{1, 2}	La Salle	historical
Munster¹	La Salle	.
Munster²	Livingston	.
Murdock^{1, 2}	Douglas	.
Murphysboro^{1, 2}	Jackson	.
Murrayville^{1, 2}	Morgan	.
Music^U	Logan	.
Musick's Ferry^U	Logan	.
Myersville²	Vermilion	historical
Mylith Park²	Lake	.
Myrtle^{1, 2}	Ogle	.
Nachusa^{1, 2}	Lee	.
Nameoki^{1, 2}	Madison	.
Naperville^{1, 2}	DuPage	aka Napierville⁵
Naplate²	La Salle	.
Naples⁵	Morgan	.
Naples^{1, 2}	Scott	.
Narita²	Logan	.
Narrow's Settlement⁵	Morgan	.
Nashville^{1, 2, 5}	Washington	.
Nason²	Jefferson	.
National City²	St. Clair	.
National Stock Yards^{1, 2}	St. Clair	.
Native Prairie²	Kane	.
Natrona^{1, 2}	Mason	.
Nauvoo^{1, 2}	Hancock	.
Neadmore^{1, 2}	Clark	.
Neal²	Cumberland	.
Nebo^{1, 2}	Pike	.
Neelyville¹	Morgan	.
Neilson²	Williamson	.
Nekoma^{1, 2}	Henry	.
Nelson^{1, 2}	Lee	.
Neoga^{1, 2}	Cumberland	.
Neponset^{1, 2}	Bureau	.
Neport⁶	Bond	.
Nettle Creek^{1, 2}	Grundy	Post Office
Nettle Creek Township¹³	Grundy	.
Neunert²	Jackson	.
Nevada^{1, 2}	Livingston	.
Nevins^{1, 2}	Edgar	.
New Athens²	Edgar	historical
New Athens^{1, 2}	St. Clair	.
New Baden^{1, 2}	Clinton	.
New Bedford^{1, 2}	Bureau	.
New Berlin¹⁵	Bond	founded 1850 by Charles Plog & Mathias Brown¹⁵
New Berlin^{1, 2}	Sangamon	.
New Boston^{1, 2, 5}	Mercer	.
New Burnside^{1, 2}	Johnson	.
New Canton^{1, 2}	Pike	.
New Castle^U	Logan	.
New Castle⁵	McLean	.
New Castle¹	Saline	.
New Castle²	Tazewell	historical
New City^{1, 2}	Sangamon	.
New Columbia^{1, 2}	Massac	.
New Delhi²	Jersey	.
New Dennison^{1, 2}	Williamson	.
New Design^{1, 5}	Monroe	.
New Douglas^{1, 2}	Madison	.
New Grand Chain^{1, 2}	Pulaski	.
New Hanover^{1, 2}	Monroe	.
New Hartford^{1, 2}	Pike	.
New Haven^{1, 2, 5}	Gallatin	.
New Hebron^{1, 2}	Crawford	.
New Holland^{1, 2}	Logan	.
New Hope²	Saline	.
New Hope²	Wabash	historical
New Lancaster²	Warren	historical
New Lebanon^{1, 2}	DeKalb	.
New Lenox^{1, 2}	Will	.
New Lexington⁵	Morgan	.
New Liberty⁶	Adams	.
New Liberty^{1, 2}	Pope	.
New London²	Hamilton	historical
New Market²	Gallatin	historical
New Massillon²	Wayne	historical
New Memphis^{1, 2}	Clinton	.
New Memphis Station^{1, 2}	Clinton	.
New Michigan²	Livingston	historical
New Milford^{1, 2}	Winnebago	.
New Minden^{1, 2}	Washington	.
New Palestine^{1, 2}	Randolph	.
New Philadelphia^{1, 2}	McDonough	.
New Philadelphia²	Pike	historical; maps & history
New Salem²	Menard	historical
New Salem^{1, 2}	Pike	.
New Salem⁵	Sangamon	.
New Virginia⁵	Bond	.
New Windsor^{1, 2}	Mercer	.
Newark^{1, 2}	Kendall	.
Newbern⁵	Greene	.
Newbern^{1, 2}	Jersey	.
Newburg²	Macon	.
Newby²	Coles	.
Newcastle²	Saline	.
Newcomb⁶	Champaign	post office
Newell^{1, 2}	Vermilion	.
Newlin's Settlement⁵	Crawford	.
Newman^{1, 2}	Douglas	.
Newmansville^{1, 2, 6}	Cass	.
Newport⁵	Greene	.
Newport^{1, 2}	Madison	.
News⁶	Calhoun	post office
Newton^{1, 2, 5}	Jasper	.
Newton Corners²	Whiteside	.
Newtown⁶	Adams	.
Newtown²	Vermilion	.
Niantic^{1, 2}	Macon	.
Niles^{1, 2}	Cook	.
Niles Centre¹	Cook	.
Nilwood^{1, 2}	Macoupin	.
Nine Mile Prairie⁵	Perry	.
Niota^{1, 2}	Hancock	.
Nipper Corner²	Hamilton	.
Noble^{1, 2}	Richland	.
Nokomis^{1, 2}	Montgomery	.
Noltings²	Washington	.
Nora^{1, 2}	Jo Daviess	.
Normal^{1, 2}	McLean	.
Norman Township¹³	Grundy	.
Normandy²	Bureau	.
Normantown^{1, 2}	Will	.
Norridge²	Cook	.
Norris^{1, 2}	Fulton	.
Norris City^{1, 2}	White	.
Norris's Settlement⁵	Greene	.
North Alton^{1, 2}	Madison	.
North Arm⁵	Edgar	.
North Aurora^{1, 2}	Kane	.
North Barrington²	Lake	.
North Caledonia²	Boone	historical
North Chicago²	Lake	.
North Chillicothe²	Peoria	.
North Dupo²	St. Clair	.
North East¹⁴	Adams	.
North Evanston¹	Cook	.
North Fork⁵	Vermilion	.
North Glen Ellyn²	DuPage	.
North Hampton²	Peoria	.
North Hanover²	Jo Daviess	.
North Harbor²	Clinton	.
North Henderson^{1, 2}	Mercer	.
North Hooper²	Iroquois	.
North Lincoln²	Logan	.
North Mounds²	Pulaski	.
North Northfield^{1, 2}	Cook	.
North Park²	Winnebago	.
North Pekin²	Tazewell	.
North Peoria^{1, 2}	Peoria	.
North Plato^{1, 2}	Kane	.
North Pointe²	McLean	.
North Quincy²	Adams	.
North Riverside²	Cook	.
North Shore²	McHenry	.
North Shoreline²	Williamson	.
North Venice²	Madison	.
North Wind²	Sangamon	.
Northbrook²	Cook	.
Northfield²	Cook	.
Northfield Woods²	Cook	.
Northlake²	Cook	.
Northville^{1, 2}	La Salle	.
Nortonville²	Morgan	.
Norway^{1, 2}	La Salle	.
Norwood^{1, 2}	Mercer	.
Norwood²	Peoria	.
Notre Dame²	St. Clair	.
Nottingham Woods²	Kane	.
Novak Park²	Kane	.
Nunda¹	McHenry	.
Nutwood²	Jersey	.
O'Fallon^{1, 2}	St. Clair	.
Oak^{1, 2}	Pope	.
Oak Brook²	DuPage	.
Oak Forest²	Cook	.
Oak Grove²	Lake	.
Oak Grove^{1, 2}	McLean	.
Oak Grove²	Rock Island	.
Oak Hill^{1, 2}	Peoria	.
Oak Hills²	St. Clair	.
Oak Lawn^{1, 2}	Cook	.
Oak Openings²	Kane	.
Oak Park^{1, 2}	Cook	.
Oak Point^{1, 2}	Clark	.
Oak Ridge²	Woodford	.
Oak Run²	Knox	.
Oakbrook Terrace²	DuPage	.
Oakcrest²	Clark	.
Oakdale^{1, 2}	Washington	.
Oakford^{1, 2}	Menard	.
Oakglen^{1, 2}	Cook	.
Oakland^{1, 2, 5}	Coles	formerly known as Cleaverville¹¹
Oakland Center²	Schuyler	.
Oakley^{1, 2}	Macon	.
Oakton²	Cook	.
Oaktown¹	Pulaski	.
Oakwood^{1, 2}	Vermilion	.
Oakwood Heights²	Madison	.
Oakwood Hills²	McHenry	.
Obed^{1, 2}	Shelby	.
Oblong^{1, 2}	Crawford	.
Oconee^{1, 2}	Shelby	.
Ocoya (Ocova)^{1, 2}	Livingston	.
Odell^{1, 2}	Livingston	.
Odgen²	Wabash	.
Odin^{1, 2}	Marion	.
Ogden^{1, 2, 6}	Champaign	.
Ogle^{1, 2}	Mercer	.
Ogles^{1, 2}	St. Clair	.
Oglesby^{1, 2}	La Salle	.
Ohio^{1, 2}	Bureau	.
Ohlman^{1, 2}	Montgomery	.
Oil Center²	Crawford	.
Oil Grove²	Crawford	.
Oilfield²	Clark	.
Okau⁵	Washington	post office
Okau Settlement⁵	Macon	.
Okawville^{1, 2}	Washington	.
Oklahoma²	Kankakee	historical
Old Brownfield²	Pope	.
Old Dad⁵	Putnam	aka Dad Joe's Grove
Old Du Quoin²	Perry	.
Old Gilchrist²	Mercer	.
Old Kane²	Greene	.
Old Kaskaskia²	Randolph	.
Old Marissa²	St. Clair	.
Old Mazon^U	Grundy	aka Mazon
Old Mill Creek²	Lake	.
Old Niota²	Hancock	.
Old Owaneco²	Christian	.
Old Pearl²	Pike	.
Old Princeton²	Cass	.
Old Ripley^{1, 2}	Bond	founded by the Wheelock brothers¹⁵
Old Ripley Township¹⁶	Bond	.
Old Salem Chautauqua²	Menard	.
Old Shawneetown²	Gallatin	.
Old Stonington²	Christian	.
Oldenburg²	Madison	.
Oldtown²	Saline	.
Olena^{1, 2}	Henderson	.
Olga^{1, 2}	Hamilton	.
Olin²	Peoria	.
Olive Branch^{1, 2}	Alexander	.
Oliver^{1, 2}	Edgar	.
Oliver²	Whiteside	.
Olivet²	Vermilion	.
Olmsted^{1, 2}	Pulaski	.
Olmsted's Mound⁵	Morgan	.
Olney^{1, 2}	Richland	.
Olympia Fields²	Cook	.
Omaha^{1, 2}	Gallatin	.
Omar²	Johnson	.
Omega^{1, 2}	Marion	.
Onarga^{1, 2}	Iroquois	.
Oneco^{1, 2}	Stephenson	.
Oneida^{1, 2}	Knox	.
Ono⁵	Edgar	post office⁵
Ontario^{1, 2}	Knox	.
Ontarioville^{1, 2}	DuPage	.
Opa⁷	Peoria	as called by French; west side of Peoria Lake; principal village of Peoria Indians
Opdyke^{1, 2}	Jefferson	.
Ophiem^{1, 2}	Henry	.
Oquawka^{1, 2}	Henderson	.
Ora¹	Jackson	.
Oran^U	Logan	.
Orange^{1, 2}	Clark	.
Orange Prairie^{1, 2}	Peoria	.
Orangemans Hall²	Mercer	.
Orangeville^{1, 2}	Stephenson	.
Oraville^{1, 2}	Jackson	.
Orchard Mines¹	Peoria	.
Orchardville^{1, 2}	Wayne	.
Oreana^{1, 2}	Macon	.
Oregon^{1, 2}	Ogle	aka Oregon City⁵
Orendorff's Mill & Settlement⁵	Tazewell	.
Orient²	Franklin	.
Orio²	Wabash	.
Orion^{1, 2}	Henry	.
Orland Hills^{1, 2}	Cook	.
Orland Park^{1, 2}	Cook	.
Orleans^{1, 2}	Morgan	.
Ormonde^{1, 2}	Warren	.
Orndorff^U	Logan	.
Orvil^U	Logan	.
Osage¹	Franklin	.
Osbernville²	Christian	Mosquito twp
Osborn^{1, 2}	Rock Island	.
Osceola^{1, 2}	Stark	Elmira twp
Osco^{1, 2}	Henry	.
Oskaloosa^{1, 2}	Clay	.
Osman^{1, 2}	McLean	.
Ospur^{1, 2}	DeWitt	.
Oswego^{1, 2}	Kendall	.
Ottawa^{1, 2, 5}	La Salle	.
Otter^{1, 2}	La Salle	historical
Otterville^{1, 2}	Jersey	.
Otto²	Fulton	historical
Otto^{1, 2}	Kankakee	.
Ottville²	Bureau	.
Out House Settlement⁵	Clinton	.
Ovid³	Jackson	1823 Gazetteer
Owaneco^{1, 2}	Christian	aka Locust; post office⁶
Owen Center^{1, 2}	Winnebago	.
Ox Bo¹	Putnam	.
Oxford³	Hamilton	1823 Gazetteer
Oxford²	Henry	historical
Oxville^{1, 2}	Scott	.
Ozark^{1, 2}	Johnson	.
P & N Junction^U	Logan	.
Paddock's Settlement^{3, 5}	Madison	1823 Gazetteer
Paderborn^{1, 2}	St. Clair	.
Padula^{1, 2}	McLean	.
Paine's Point¹	Ogle	.
Paineville²	Williamson	.
Paisley Corners²	Bond	.
Pala¹²	Unknown	Ebay offered a postcard of the Christian Church, Pala, IL, postmarked 1907; no other info is known at this time
Palatine^{1, 2}	Cook	.
Palermo^{1, 2}	Edgar	.
Palestine^{1, 2, 4, 5}	Crawford	1823 Gazetteer
Palisades²	DuPage	.
Palm Beach²	McHenry	.
Palmer^{1, 2, 6}	Christian	Bear Creek twp (before 1839 this twp was part of Montgomery Co.)
Palmer's Settlement⁵	Knox	.
Palmerton^{1, 2}	Cass	.
Palmyra⁴	Edwards	1823 Gazetteer
Palmyra²	Lee	.
Palmyra^{1, 2}	Macoupin	.
Paloma^{1, 2}	Adams	.
Palos Heights²	Cook	.
Palos Hills²	Cook	.
Palos Park²	Cook	.
Pals Grove⁶	Carroll	.
Palzo²	Williamson	.
Pana^{1, 2, 6}	Christian	Pana twp, was part of Shelby Co. until 1839
Panama²	Bond	.
Pankeyville²	Saline	.
Panky's Settlement⁵	Pope	.
Panola^{1, 2}	Woodford	.
Panorama Hills²	Clinton	.
Papineau^{1, 2}	Iroquois	.
Paradise^{1, 2, 5}	Coles	post office⁵
Parcville¹	DeWitt	.
Paris^{1, 2, 5}	Edgar	.
Park City²	Lake	.
Park Forest²	Cook	.
Park Ridge^{1, 2}	Cook	.
Parker^{1, 2}	Johnson	.
Parker's Settlement⁵	Crawford	.
Parkersburg^{1, 2}	Richland	.
Parkland²	Tazewell	.
Parks Corners⁶	Boone	post office
Parkville^{2, 6}	Champaign	.
Parnell²	DeWitt	.
Parr's Settlement⁵	Bond	.
Parrish^{1, 2}	Franklin	.
Pasfield^{1, 2}	Sangamon	.
Passport^{1, 2}	Richland	.
Patoka^{1, 2}	Marion	.
Patterson^{1, 2}	Greene	.
Patterson Springs²	Douglas	.
Patton²	Clark	.
Patton^{1, 2}	Wabash	.
Pattonsburg²	Marshall	.
Pauline²	Champaign	.
Paulton²	Williamson	.
Pavillion^{1, 2}	Kendall	.
Paw Paw^{1, 2}	Lee	.
Pawnee^{1, 2}	Sangamon	.
Pawnee Junction^{1, 2}	Sangamon	.
Paxton^{1, 2}	Ford	.
Paynes Point²	Ogle	.
Payson^{1, 2}	Adams	.
Payson Township¹⁴	Adams	.
Paytonville²	Grundy	.
Peabody²	Sangamon	.
Pearl^{1, 2}	Pike	.
Pearl City²	Stephenson	.
Pebble Beach²	Grundy	.
Pecatonica^{1, 2}	Winnebago	.
Pegram²	Greene	.
Peifer²	Logan	.
Pekin^{1, 2, 5}	Tazewell	.
Pekin Heights²	Tazewell	.
Pellville²	Vermilion	.
Penfield^{1, 2}	Champaign	.
Pennington Point^{1, 2}	McDonough	.
Penrose^{1, 2}	Whiteside	.
Peoria^{1, 2, 5}	Peoria	.
Peoria⁴	Pike	1823 Gazetteer; 1823
Peoria District Junction^U	Logan	.
Peoria Heights^{1, 2}	Peoria	.
Peotone^{1, 2}	Will	.
Percy^{1, 2}	Randolph	.
Perdueville²	Ford	.
Perkin's Settlement⁵	Hancock	.
Perkins²	Pope	historical
Perks²	Pulaski	.
Perry^U	Logan	.
Perry^{1, 2, 5}	Pike	.
Perryville¹⁵	Bond	historic, first county seat in 1817¹⁵
Perryville⁴	Fayette	1823 Gazetteer
Perryville^{1, 2}	Winnebago	.
Pershing²	Franklin	.
Peru^{1, 2, 5}	La Salle	.
Pesotum^{1, 2, 6}	Champaign	.
Peters Creek^{1, 2}	Hardin	.
Petersburg^{1, 2}	Menard	.
Petersburg⁵	Sangamon	.
Petersburg^{2, 4}	St. Clair	1823 Gazateer
Peterstown²	La Salle	.
Peterville²	Mason	.
Petersville^{1, 2}	Mercer	.
Petrolia²	Lawrence	.
Pharoahs Gardens²	Johnson	.
Pheasant Run²	Kane	.
Phelps²	St. Clair	.
Phelps^{1, 2}	Warren	.
Phigley's Settlement⁵	Adams	.
Philadelphia^{1, 2, 6}	Cass	.
Phillips's Settlement⁵	Alexander	.
Phillipstown^{1, 2}	White	.
Philo^{1, 2, 6}	Champaign	.
Phoenix²	Cook	.
Piankashawtown²	Edwards	historical
Piasa^{1, 2}	Macoupin	.
Piasa Hills²	Madison	.
Piatt²	Piatt	.
Pierceburg²	Crawford	.
Pierron^{1, 2}	Bond	laid off in 1868 by J. Pierron¹⁵
Pierson^{1, 2}	Piatt	.
Pigeon^{1, 2}	Jefferson	historical
Pike^{1, 2}	Pike	.
Pilot Center²	Kankakee	historical
Pin Oak¹	Wayne	.
Pinckneyville^{1, 2, 5}	Perry	.
Pine Grove²	Grundy	.
Pine View²	Kane	.
Pingree Grove^{1, 2}	Kane	.
Pinhook²	Fayette	historical
Pink Prairie^{1, 2}	Henry	.
Pinkstaff^{1, 2}	Lawrence	.
Pinus⁵	Jackson	post office⁵
Pioneer²	Peoria	.
Piopolis^{1, 2}	Hamilton	.
Piper City^{1, 2}	Ford	.
Piper's Point Settlement⁵	Greene	.
Pisgah^{1, 2}	Morgan	.
Pistakee²	McHenry	.
Pistakee Highlands²	McHenry	.
Pitcherville²	Jo Daviess	historical
Pitchin²	Iroquois	.
Pittsburg^{1, 2}	Fayette	.
Pittsburg⁶	Jersey	.
Pittsburg²	Williamson	.
Pittsfield^{1, 2, 5}	Pike	.
Pittwood²	Iroquois	.
Plainfield²	Jasper	.
Plainfield^{1, 2, 5}	Will	.
Plainview^{1, 2}	Macoupin	.
Plainville^{1, 2}	Adams	.
Plano^{1, 2}	Kendall	.
Plato^{1, 5}	Iroquois	.
Plato Center²	Kane	.
Plato Corners²	Kane	.
Plattville^{1, 2}	Kendall	.
Pleak^{1, 2}	Shelby	.
Pleasant Green²	Stark	Osceola twp
Pleasant Grove²	Johnson	.
Pleasant Grove⁵	Tazewell	.
Pleasant Hill²	McLean	.
Pleasant Hill^{1, 2}	Pike	.
Pleasant Mound^{1, 2}	Bond	.
Pleasant Mound Township¹⁶	Bond	.
Pleasant Plains^{1, 2}	Sangamon	.
Pleasant Prairie⁶	Bond	post office
Pleasant Ridge²	Fulton	historical
Pleasant Ridge²	Madison	.
Pleasant Vale⁵	Pike	.
Pleasant Valley^{1, 2}	Jo Daviess	.
Pleasant View^{1, 2}	Schuyler	.
Plum Hill^{1, 2}	Washington	.
Plum River¹	Jo Daviess	.
Plumfield^{1, 2}	Franklin	.
Plymouth^{1, 2}	Hancock	.
Poag^{1, 2}	Madison	.
Pocahontas^{1, 2}	Bond	.
Pohaten²	Wabash	historical
Point Pleasant⁶	Champaign	post office
Point Pleasant²	Jasper	.
Point Republic⁵	La Salle	.
Polk²	Will	.
Polo^{1, 2}	Ogle	.
Polsgrove²	Carroll	.
Pomona^{1, 2}	Jackson	.
Pond²	Johnson	.
Ponemah^{1, 2}	Warren	.
Pontiac^{1, 2}	Livingston	.
Pontiac²	St. Clair	.
Pontoon Beach²	Madison	.
Pontoosuc	Hancock	.
Poplar City^{1, 2}	Mason	.
Poplar Grove^{1, 2}	Boone	.
Poplar Grove²	Rock Island	.
Poplar Ridge²	Jackson	.
Port Barrington²	McHenry	.
Port Byron^{1, 2}	Rock Island	.
Port Jackson²	Crawford	.
Portage^{1, 2}	Jo Daviess	.
Porterfield²	Marshall	.
Porterville²	Crawford	.
Portland⁴	Randolph	1823 Gazetteer
Portland²	Whiteside	.
Portuguese Hill²	Morgan	.
Posen²	Cook	.
Posen²	Washington	.
Posey²	Clinton	.
Post Oak²	Fayette	.
Postville²	Logan	.
Postville⁵	Sangamon	.
Potomac^{1, 2}	Vermilion	.
Pottstown^{1, 2}	Peoria	.
Pottsville²	Union	.
Poverty Ridge²	Fulton	.
Powellton²	Hancock	.
Powerton²	Tazewell	.
Powley Corners²	Warren	.
Prairie²	Randolph	.
Prairie Center^{1, 2}	La Salle	.
Prairie City^{1, 2}	McDonough	.
Prairie Creek²	Logan	.
Prairie du Pont⁴	St. Clair	1823 Gazetteer
Prairie du Rocher^{1, 2, 4, 5}	Randolph	1823 Gazetteer
Prairie Grove²	McHenry	.
Prairie Hill/Hall^{1, 2}	Macon	.
Prairie Home^{1, 2}	Shelby	.
Prairie Shores²	Cook	.
Prairie Town¹	Madison	.
Prairie View²	Boone	.
Prairie View^{1, 2}	Lake	.
Prairieview Estates²	Ogle	.
Prairieville^{1, 2}	Lee	.
Prather's Settlement⁵	Greene	.
Pratt^{1, 2}	Whiteside	historical
Preemption^{1, 2}	Mercer	.
Prentice^{1, 2}	Morgan	.
Preston^{1, 2, 5}	Randolph	.
Preston Heights²	Will	.
Prince Crossing²	DuPage	.
Prince's Settlement⁵	Peoria	.
Princeton^{1, 2}	Bureau	.
Princeton⁶	Cass	.
Princeton⁵	Morgan	.
Princeton⁵	Putnam	.
Princeville^{1, 2}	Peoria	.
Proctor^{1, 2}	Ford	.
Prophet's Village⁵	Henry	.
Prophetstown^{1, 2}	Whiteside	.
Prospect^{1, 2}	Champaign	.
Prospect city⁸	Vermilion	abandoned; laid out by Ransom R. Murdock, William H. Pells, Leander Britt, Benjamin Stites and Dryden Donelly; located on the south half of the southwest quarter of section 8, the northeast quarter of section 18, N., 20 acres of the west half of the northwest quarter, of section 17, and the east half of the northwest quarter of section 17, and the south east quarter of Section 7, and the west half (less twenty acres of north end) of the northwest quarter of Section 17, lying in township 23, N. of R, 10 E. of the 3d Principal Meridian; the plat was recorded July 31, 1857
Prospect Heights²	Cook	.
Prospect Hill⁵	St. Clair	.
Prospect Park¹	DuPage	.
Prouty²	Sangamon	.
Providence^{1, 2}	Bureau	.
Provisio¹	Cook	.
Pruett²	Fayette	.
Pryortown²	Pulaski	.
Puder²	Kankakee	.
Pulaski²	Hancock	.
Pulaski²	Logan	.
Pulaski^{1, 2}	Pulaski	.
Pulley's Mill¹	Williamson	.
Pullman^{1, 2}	Cook	.
Pureton²	Richland	.
Putnam^{1, 2}	Putnam	.
Pyatts^{1, 2}	Perry	.
Pyramid²	Washington	.
Quaker²	Edgar	historical
Quaker Settlement⁵	Crawford	.
Quashquema²	Hancock	historical
Quatoga Bluff²	Madison	.
Quentin Corners²	Lake	.
Quincy^{1, 2, 5}	Adams	County Seat
Quincy Junction^{1, 2}	Pike	.
Quisenberry²	Logan	.
Quiver Beach^{1, 2}	Mason	.
Raccoon¹	Marion	.
Racy²	Christian	.
Radcliff's Point⁵	Washington	.
Raddle/Raddleville^{1, 2}	Jackson	.
Radford^{1, 2}	Christian	Prairieton twp
Radley^{1, 2}	Lee	.
Radom^{1, 2}	Washington	.
Radville²	Tazewell	.
Rafetown^{1, 2}	Jasper	.
Ragtown²	McDonough	historical
Rainbow Hills²	Kane	.
Raleigh^{1, 2}	Saline	.
Ralston²	Christian	.
Ramsey^{1, 2}	Fayette	.
Ramsey Acres²	Ogle	.
Ramsey's Settlement⁵	Madison	.
Randallville^U	Christian	Mosquito twp; aka Randellsville post office⁶
Randleman's Settlement⁵	St. Clair	.
Randolph^{1, 2}	McLean	Randolph's Grove⁵
Randolph²	Randolph	.
Rankin^{1, 2}	Vermilion	.
Ransom^{1, 2}	La Salle	.
Rantoul^{1, 2, 6}	Champaign	.
Rapatee^{1, 2}	Knox	.
Rapids City^{1, 2}	Rock Island	.
Rardin^{1, 2}	Coles	.
Raritan^{1, 2}	Henderson	.
Rathburn's Mill^U	Christian	South Fork twp
Raum^{1, 2}	Pope	.
Raven^{1, 2}	Edgar	.
Ravinia^{1, 2}	Lake	.
Rawalts^{1, 2}	Fulton	.
Rawson Bridge²	McHenry	.
Ray^{1, 2}	Schuyler	.
Ray's Settlement⁵	Hancock	.
Raymond^{1, 2}	Montgomery	.
Raynor Park²	Will	.
Rayville^{1, 2}	Vermilion	.
Reader^{1, 2}	Macoupin	.
Readfield⁵	Pike	.
Reading^{1, 2}	Livingston	.
Reardon²	Jersey	.
Rectorville²	Hamilton	historical
Red Bud^{1, 2}	Randolph	.
Red Bud²	Saline	historical
Red Oak^{1, 2}	Stephenson	.
Red Top^{1, 2}	Edwards	.
Reddick^{1, 2}	Livingston	.
Reddish²	Jersey	.
Redgate Ridge	Kane	.
Redmon^{1, 2}	Edgar	.
Reed Crossing²	La Salle	.
Reeds^{1, 2}	Henderson	.
Reeds Crossing^{1, 2}	Boone	historical
Reeds Station²	Jackson	.
Rees²	Morgan	.
Reevesville^{1, 2}	Johnson	.
Reily Lake²	Randolph	.
Reilly²	Vermilion	.
Renault^{1, 2}	Monroe	.
Rend City²	Franklin	.
Rennerville²	Shelby	.
Reno^{1, 2}	Bond	.
Renshaw²	Pope	.
Rentchler^{1, 2}	St. Clair	.
Resthaven²	Will	.
Reynolds^{1, 2}	Rock Island	.
Reynoldsburg²	Johnson	.
Reynoldsville²	Union	.
Rhody^U	Logan	.
Rice²	Jo Daviess	.
Rice²	Perry	.
Richards^{1, 2}	La Salle	.
Richards Park^U	Grundy	.
Richardson^{1, 2}	Kane	.
Richfield^{1, 2}	Adams	formerly known as Richland¹⁴
Richfield Township¹⁴	Adams	.
Richland¹⁴	Adams	name changed to Richfield in 1850¹⁴
Richland^{1, 2}	Sangamon	.
Richmond^{1, 2}	McHenry	.
Richmond²	Tazewell	.
Richmond Grove^U	Logan	.
Richton Park^{1, 2}	Cook	.
Richview^{1, 2}	Washington	.
Richwoods^{1, 2}	Crawford	.
Riddle Hill²	Sangamon	.
Riddleville²	Lawrence	.
Ridge Farm^{1, 2}	Vermilion	.
Ridge Prairie⁵	Madison	.
Ridge Settlement⁵	Clinton	.
Ridge Settlement⁵	Union	.
Ridgecrest²	Grundy	.
Ridgefield^{1, 2}	McHenry	.
Ridgely^{1, 2}	Sangamon	.
Ridgeville^{1, 2}	Iroquois	.
Ridgewood²	Will	.
Ridgway^{1, 2}	Gallatin	.
Ridott^{1, 2}	Stephenson	.
Ridott Corners²	Stephenson	.
Riehl²	Madison	.
Riffle^{1, 2}	Clay	.
Riggston^{1, 2}	Scott	.
Riley²	McHenry	.
Rileyville¹	Saline	.
Rileyville²	Williamson	.
Rinard^{1, 2}	Wayne	.
Ringwood^{1, 2}	McHenry	.
Rio^{1, 2}	Knox	.
Ripley⁴	Bond	1823 Gazetteer
Ripley^{1, 2}	Brown	.
Rising^{1, 2}	Champaign	.
Rising Sun²	Pope	.
Rising Sun²	White	.
Risk^{1, 2}	Livingston	.
Ritchie^{1, 2}	Will	.
River²	Kankakee	.
River Forest^{1, 2}	Cook	.
River Grange Lakes²	Kane	.
River Grove^{1, 2}	Cook	.
River Precinct⁵	Lawrence	.
Riverdale^{1, 2}	Cook	.
Riverdale²	Winnebago	.
Riverside^{1, 2}	Cook	.
Riverstream²	McHenry	.
Riverton^{1, 2}	Sangamon	.
Riverview²	Cook	.
Riverwoods²	Lake	.
Roaches^{1, 2}	Jefferson	.
Roachtown²	St. Clair	.
Roanoke^{1, 2}	Woodford	.
Robbins²	Cook	.
Robbs²	Pope	.
Robein²	Tazewell	.
Roberts¹	Ford	.
Robinson^{1, 2}	Crawford	.
Robinwood²	Johnson	.
Roby²	Christian	Mt. Auburn twp
Rochelle^{1, 2}	Ogle	.
Rochester^{1, 2, 5}	Sangamon	.
Rochester²	Wabash	.
Rock^{1, 2}	Pope	.
Rock City^{1, 2}	Stephenson	.
Rock Creek²	Adams	.
Rock Creek⁶	Carroll	post office
Rock Creek^{1, 2}	Hardin	.
Rock Fall^{1, 2}	Whiteside	.
Rock Grove^{1, 2}	Stephenson	.
Rock Island^{1, 2, 5}	Rock Island	.
Rock Island City⁵	?	.
Rock Run Park²	Will	.
Rockbridge^{1, 2}	Greene	.
Rockdale²	Will	.
Rockdale Junction²	Will	.
Rockefeller^{1, 2}	Lake	.
Rockford^{1, 2, 5}	Winnebago	.
Rockport^{1, 2, 5}	Pike	.
Rockton^{1, 2}	Winnebago	.
Rockwell⁵	?	.
Rockwood^{1, 2}	Randolph	.
Rodden^{1, 2}	Jo Daviess	.
Rodemich²	St. Clair	.
Rodgersville²	Williamson	.
Rohrer^{1, 2}	Morgan	.
Roland^{1, 2}	White	.
Rolling Green²	Coles	.
Rolling Meadows²	Cook	.
Rollins^{1, 2}	Lake	.
Rollo^{1, 2}	DeKalb	.
Rombury Oaks²	Kane	.
Rome^{1, 2, 5}	Peoria	.
Romeo^{1, 2}	Will	.
Romeoville^{1, 2}	Will	.
Rondout^{1, 2}	Lake	.
Roodhouse^{1, 2}	Greene	.
Rooks Creek^{1, 2}	Livingston	.
Roots²	Randolph	.
Rosamond^{1, 2, 6}	Christian	Rosamond twp
Roscoe^{1, 2}	Winnebago	.
Rose Hill^{1, 2}	Jasper	.
Rose Lake²	St. Clair	.
Rosebud²	Pope	.
Rosecrans^{1, 2}	Lake	.
Rosedale²	Jersey	.
Rosedale²	Madison	.
Roselle²	DuPage	.
Rosemont²	Cook	.
Rosemont²	St. Clair	.
Roseville^{1, 2}	Warren	.
Rosewood Heights²	Madison	.
Rosiclare^{1, 2}	Hardin	.
Roslyn^{1, 2}	Cumberland	.
Rossville^{1, 2}	Vermilion	.
Rossville Junction^{1, 2}	Vermilion	.
Roth²	Alexander	.
Round Grove^{1, 2}	Whiteside	.
Round Knob^{1, 2}	Massac	.
Round Lake²	Lake	.
Round Lake Beach²	Lake	.
Round Lake Heights²	Lake	.
Round Lake Park²	Lake	.
Round Prairie²	Wayne	.
Rowe^{1, 2}	Livingston	.
Rowell^{1, 2}	DeWitt	.
Roxana²	Madison	.
Roxbury²	Lee	.
Royal^{1, 2}	Champaign	.
Royal Heights²	St. Clair	.
Royal Lake²	Macoupin	.
Royal Lake Resort²	Clinton	.
Royalton²	Franklin	.
Rozetta^{1, 2}	Henderson	.
Ruark^{1, 2}	Lawrence	.
Ruby^{1, 2}	Winnebago	.
Rudement²	Saline	.
Rugby^{1, 2}	Livingston	.
Ruma^{1, 2}	Randolph	.
Rumpler²	Vermilion	.
Rural Hill^{1, 2}	Hamilton	.
Rushville^{1, 2, 5}	Schuyler	.
Russell^{1, 2}	Lake	.
Russellville²	Boone	.
Russellville^{1, 2}	Lawrence	.
Russelville⁵	Lawrence	.
Rust²	Franklin	.
Rustic Acres²	Rock Island	.
Rutherford²	Champaign	.
Rutland^{1, 2}	La Salle	.
Ryan²	Vermilion	.
Sabina^{1, 2}	McLean	.
Sacramento^{1, 2}	White	.
Sadorus^{1, 2}	Champaign	.
Sag Bridge^{1, 2}	Cook	.
Saidora^{1, 2}	Mason	.
Sailor Springs^{1, 2}	Clay	.
St. Anne^{1, 2}	Kankakee	.
St. Anne Woods²	Kankakee	.
St. Augustine^{1, 2}	Knox	.
St. Charles^{1, 2}	Kane	.
St. David^{1, 2}	Fulton	.
St. Elmo^{1, 2}	Fayette	.
St. Francisville^{1, 2}	Lawrence	.
St. George^{1, 2}	Kankakee	.
St. Jacob^{1, 2}	Madison	.
St. James^{1, 2}	Fayette	.
St. Joe²	Monroe	.
St. Johns^{1, 2}	Perry	.
St. Joseph^{1, 2, 6}	Champaign	.
St. Libory^{1, 2}	St. Clair	.
St. Marie¹	Jasper	.
St. Marion⁵	Ogle	.
St. Mary^{1, 2}	Hancock	.
St. Mary⁴	Madison	1823 Gazetteer
St. Mary's⁵	Schuyler	.
St. Morgan^{1, 2}	Madison	.
St. Paul^{1, 2}	Fayette	.
St. Peter²	Fayette	.
St. Philip⁴	Monroe	1823 Gazetteer
St. Rose^{1, 2}	Clinton	.
St. Thomas²	Madison	.
Salem^{1, 2, 5}	Marion	.
Salem²	Stephenson	.
Salem⁸	Vermilion	abandoned; surveyed for B. D. C. Herring; its location was somewhat complicated, being six and a half acres out of the north half of the southeast quarter of section No. 30, T. 21, N. of R. 12, west; also three acres one pole out of the east half of S. W. quarter of three sections. Beginning at corner stake, in the south line of said section. Thence west 14 poles to a stone, thence north 31 poles to a stone; thence east 9 poles to a stone; thence north 9 poles to a stone; thence east 31 poles to a stone, thence south 40 poles to a stone; thence west 26 poles to the beginning; the plat contained nine acres and seventy-nine poles of land.
Salina²	Kane	.
Salina⁸	Vermilion	aka Fairmount
Saline (City)²	Saline	.
Saline Landing²	Hardin	.
Saline Mines¹	Gallatin	.
Saline Valley Store²	Saline	historical
Salisbury⁶	Jersey	.
Salisbury^{1, 2, 5}	Sangamon	.
Salt Creek^{1, 5}	DuPage	.
Salt Creek^U	Logan	.
Salt Creek Settlement⁵	Macon	.
Salu⁴	Madison	1823 Gazetteer
Saluda^{1, 2}	Knox	.
Samoth^{1, 2}	Massac	.
Sampson's Landing⁶	Calhoun	.
Samsville^{1, 2}	Edwards	.
Samuelson Corners²	Winnebago	.
San Jose²	Logan	.
San Jose¹	Mason	.
Sand Barrens²	Lawrence	.
Sand Creek Settlement⁵	Shelby	.
Sand Pit⁶	Carroll	post office
Sand Prairie⁵	Tazewell	.
Sand Ridge^{1, 2}	Grundy	.
Sand Ridge^{1, 2}	Jackson	.
Sandburn^{1, 2}	Johnson	.
Sander's Store⁶	Christian	May twp
Sandersville²	Christian	May twp (originally part of Taylorville & Stonington precincts until 1866, previously known as "Smith" then "Howard")
Sandoval^{1, 2}	Marion	.
Sands^{1, 2}	Whiteside	.
Sandusky^{1, 2}	Alexander	.
Sandwich^{1, 2}	DeKalb	.
Sandy Creek Post Office⁵	La Salle	.
Sanfordville²	Whiteside	historical
Sangamon^{1, 2}	Macon	.
Sangamon⁵	Sangamon	.
Sankoty²	Peoria	.
Santa Fe¹	Alexander	.
Saratoga²	Grundy	.
Saratoga²	Union	.
Saratoga Center²	Marshall	.
Saratoga Township¹³	Grundy	.
Sato^{1, 2}	Jackson	.
Sauganash²	Cook	.
Sauget²	St. Clair	.
Sauk Village²	Cook	.
Sauk Village⁵	Rock Island	.
Saunders²	Sangamon	.
Saunemin^{1, 2}	Livingston	.
Savage²	Morgan	.
Savanna^{1, 2, 6}	Carroll	.
Savanna⁵	Jo Daviess	.
Savoy^{1, 2, 6}	Champaign	.
Sawyerville²	Macoupin	.
Saxon^{1, 2}	Henry	historical
Saxon²	Livingston	historical
Saybrook^{1, 2}	McLean	.
Scales Mound^{1, 2}	Jo Daviess	.
Scarboro²	Lee	.
Schaeferville²	Tazewell	.
Schapville^{1, 2}	Jo Daviess	.
Schaufel Corners²	Lake	.
Schaumburg^{1, 2}	Cook	.
Scheller²	Jefferson	.
Schick²	DuPage	.
Schiller Park²	Cook	.
Schnell²	Richland	.
School¹	White	.
Schoper²	Macoupin	.
Schram City²	Montgomery	.
Schrodts Station²	Wabash	.
Schrum²	Cook	.
Schuline²	Randolph	.
Schutz Mill¹	Greene	.
Schwer²	Iroquois	.
Sciota^{1, 2}	McDonough	.
Scioto Mills²	Stephenson	.
Scottland^{1, 2}	Edgar	.
Scotts²	Edgar	.
Scotts Mill²	Schuyler	.
Scottsburg^{1, 2}	McDonough	.
Scottsville²	Wayne	.
Scottville^{1, 2}	Macoupin	.
Scovel^{1, 2}	Livingston	.
Scraper-Moecherville²	Kane	.
Scroggin^U	Logan	.
Seaton^{1, 2}	Mercer	.
Seatonville^{1, 2}	Bureau	.
Sebastopol^{1, 2}	Madison	.
Secor^{1, 2}	Woodford	.
Seehorn^{1, 2}	Pike	.
Sefton²	Fayette	.
Sellers^{1, 2}	Champaign	.
Selma²	Wabash	historical
Selmaville²	Marion	.
Seminary²	Richland	.
Seminary Township⁵	Fayette	.
Senachwine Township⁷	Peoria	.
Seneca^{1, 2}	La Salle	.
Senex⁵	McLean	post office⁵
Sepo^{1, 2}	Fulton	.
Serena^{1, 2}	La Salle	.
Sesser²	Franklin	.
Settlement Under the Bluff⁵	Jackson	.
Seven Mile Prairie⁵	White	.
Seville^{1, 2}	Fulton	.
Seward^{1, 2}	Winnebago	.
Sexson Corner^{1, 2}	Shelby	.
Seymour^{1, 2}	Champaign	.
Shabbona^{1, 2}	DeKalb	.
Shabbona Grove^{1, 2}	DeKalb	.
Shadow Lawn²	Kankakee	.
Shady Acres²	Morgan	.
Shady Beach²	Henry	.
Shady Grove²	Massac	.
Shafter²	Fayette	.
Shakerag²	Williamson	.
Shale Bluff²	Sangamon	.
Shale City²	Mercer	.
Shamrock²	Jasper	.
Shamrock²	McLean	.
Shangai City²	Warren	.
Shannon^{1, 2, 6}	Carroll	.
Shannon's Store⁵	Randolph	post office⁵
Sharpsburg^{1, 2, 6}	Christian	Buckhart twp
Shasta²	Alexander	historical
Shattuc^{1, 2}	Clinton	.
Shaw^{1, 2}	Lee	.
Shaw²	Warren	.
Shawneetown^{1, 2, 4, 5}	Gallatin	1823 Gazetteer
Sheffield^{1, 2}	Bureau	.
Shelburn²	Lee	historical
Shelbyville^{1, 2, 5}	Shelby	.
Sheldon^{1, 2}	Iroquois	.
Sheldons Grove^{1, 2}	Schuyler	.
Shepherd^{1, 2}	Pike	.
Shepherd or Shepherdstown⁸	Vermilion	abandoned; "...was laid out in 1836. It was located directly east of Danville very near to the state line. This was one of those early towns which sprang into existence and while they were platted and attempts made to sell lots, yet never came off the paper used to plat and advertise them. ...was laid out by John Villars July 28, 1836. This town was on the map as Shepherdstown, but it is platted as Shepherds."
Sherburnville^{1, 2}	Kankakee	.
Sheridan^{1, 2}	La Salle	.
Sheridan^U	Logan	.
Sheridan Estates²	Adams	.
Sherman^{1, 2}	Sangamon	.
Sherman Corners²	Lake	.
Shermanville⁶	Boone	.
Sherrard²	Mercer	.
Sherwood Oaks²	Cook	.
Shetlerville^{1, 2}	Hardin	.
Shields²	Jefferson	.
Shiloh^{1, 2, 5}	St. Clair	.
Shiloh Centre¹	Champaign	.
Shiloh Hill^{1, 2}	Randolph	.
Shiloh Station²	St. Clair	.
Shinn^{1, 2}	Pike	.
Shipman^{1, 2}	Macoupin	.
Shirland^{1, 2}	Winnebago	.
Shirley²	Jefferson	.
Shirley^{1, 2}	McLean	.
Shoal Creek Bridge⁵	Clinton	post office
Shoal Creek Township¹⁶	Bond	.
Shobonier^{1, 2}	Fayette	.
Shockokon⁵	Warren	post office
Shokokon²	Henderson	.
Shont's Settlement⁵	Mercer	.
Shoo Fly²	McDonough	.
Shook's Settlement⁵	Monroe	.
Shop Creek^{1, 2}	Montgomery	.
Shorewood²	Will	.
Shuey's Settlement⁵	Adams	.
Shumway^{1, 2}	Effingham	.
Sibley^{1, 2}	Ford	.
Sicily²	Christian	South Fork twp
Sidell^{1, 2}	Vermilion	.
Sidney^{1, 2, 5, 6}	Champaign	.
Sigel^{1, 2}	Shelby	.
Signal Hill²	St. Clair	.
Silent Meadow²	Kane	.
Siloam^{1, 2}	Brown	.
Silvan Grove Settlement⁵	Cass	.
Silver Glen Meadows²	Kane	.
Silver Lake²	Henderson	historical
Silver Lake²	McHenry	.
Silvis²	Rock Island	.
Simpson^{1, 2}	Johnson	.
Sims^{1, 2}	Wayne	.
Sinclair^{1, 2}	Morgan	.
Sitgreave's Settlement⁵	Clinton	.
Six's Prairie⁵	Schuyler	.
Skare Estates²	Ogle	.
Skelton^{1, 2}	Logan	.
Ski Hill²	McHenry	.
Skillet Fork Settlement⁵	Hamilton	.
Skillet Fork Settlement⁵	White	.
Skokie²	Cook	.
Skokie Junction²	Lake	.
Skokie Manor²	Lake	.
Slackwater²	Stark	Essex twp; historical
Sleepy Hollow²	Kane	.
Sleepy Hollow²	Williamson	.
Sloan²	Madison	.
Sloan Station²	Champaign	.
Slocum Corners²	Lake	.
Small's Settlement⁵	St. Clair	.
Smallsburg⁵	Lawrence	.
Smith's Settlement⁵	Bond	.
Smithboro^{1, 2}	Bond	aka Henderson Station, laid out in 1870 by HH Smith¹⁵
Smithdale^{1, 2}	Livingston	.
Smithfield^{1, 2}	Fulton	.
Smithshire^{1, 2}	Warren	.
Smithton^{1, 2}	St. Clair	.
Smithville^{1, 2}	Peoria	.
Smithville²	Wayne	.
Smothersville^{1, 2}	Franklin	.
Snearlyville²	Clinton	.
Snicarte^{1, 2}	Mason	.
Snider^{1, 2}	Vermilion	.
Snider's Settlement⁵	Macon	.
Snyder^{1, 2}	Clark	.
Sollitt^{1, 2}	Kankakee	.
Solomon^{1, 2}	DeWitt	.
Solon Mills^{1, 2}	McHenry	.
Somerset^{1, 2}	Saline	.
Somonauk^{1, 2}	DeKalb	.
Sonora^{1, 2}	Hancock	historical
Soperville²	Knox	.
Sorento^{1, 2}	Bond	.
South Addison^{1, 2}	DuPage	.
South America⁵	Gallatin	.
South America¹	Saline	.
South Barrington²	Cook	.
South Beloit²	Winnebago	.
South Danville²	Vermilion	.
South Elgin^{1, 2}	Kane	.
South Elkhorn²	Carroll	.
South Elmhurst^{1, 2}	DuPage	.
South Evanston¹	Cook	.
South Fork^U	Christian	South Fork twp
South Freeport^{1, 2}	Stephenson	.
South Grove¹	DeKalb	.
South Holland¹	Cook	.
South Jacksonville²	Morgan	.
South Lockport²	Will	.
South Ottawa^{1, 2}	La Salle	historical
South Park²	Kane	.
South Paw Paw²	Lee	.
South Pekin²	Tazewell	.
South Rome²	Peoria	.
South Roxana²	Madison	.
South Strasburg²	Shelby	.
South Streator²	Livingston	.
South Wilmington²	Grundy	.
Southern Hills²	Jackson	.
Southern View²	Sangamon	.
Southgate²	Ogle	.
Southlawn²	Sangamon	.
Southmoor²	Cook	.
Southmoor²	Madison	.
Southport²	Peoria	.
Spankey^{1, 2}	Jersey	.
Sparks Hill^{1, 2}	Hardin	.
Sparland^{1, 2}	Marshall	.
Sparta^{1, 2}	Randolph	.
Spaulding^{1, 2}	Cook	.
Spaulding^{1, 2}	Sangamon	.
Spaulding Corners²	Lake	.
Speer²	Stark	.
Spencer²	Pike	.
Spencer^{1, 2}	Will	.
Spencer Heights²	Pulaski	.
Spillertown²	Williamson	.
Spires²	Woodford	.
Spring^{1, 2}	Brown	.
Spring Bay^{1, 2}	Woodford	.
Spring Bluff¹	Lake	.
Spring Creek Settlement²	McDonough	historical
Spring Garden^{1, 2}	Jefferson	.
Spring Green²	Kane	.
Spring Grove^{1, 2}	McHenry	.
Spring Grove^{2, 5}	Warren	historical
Spring Hill^{1, 2}	Whiteside	.
Spring Island Grove⁵	Sangamon	.
Spring Valley²	Adams	.
Spring Valley^{1, 2}	Bureau	.
Spring Valley²	Whiteside	.
Springer (Station)^{1, 2}	White	.
Springerton^{1, 2}	White	.
Springfield^{1, 2, 4, 5}	Sangamon	1823 Gazetteer
Springville^{1, 2}	Union	.
Stagecoach Hills²	Winnebago	.
Stagecoach Junction²	Montgomery	.
Staley^{1, 2}	Champaign	.
Stallings^{1, 2}	Madison	.
Standard²	Putnam	.
Standard City²	Macoupin	.
Stanford^{1, 2}	McLean	formerly known as "Allin"
Staples Corner²	Cook	.
Star City²	Calhoun	.
Stark^{1, 2}	Stark	Valley twp
Starks²	Kane	.
Starnes^{1, 2}	Sangamon	.
Starwano²	Stark	West Jersey twp
State Park Place²	Madison	.
State Road²	Champaign	.
Staunton^{1, 2}	Macoupin	.
Stavenger^{1, 2}	La Salle	.
Steel City²	Franklin	.
Steel's Mill⁵	Randolph	.
Steele^{1, 2}	Will	.
Steeleville^{1, 2}	Randolph	.
Steelton²	Vermilion	.
Steger²	Cook	.
Stelle²	Ford	.
Stephenson⁵	Rock Island	.
Sterling⁴	Clark	1823 Gazetteer
Sterling^{1, 2}	Whiteside	.
Sterling Place²	St. Clair	.
Steward^{1, 2}	Lee	.
Stewardson^{1, 2}	Shelby	.
Stewardsville²	McDonough	historical
Stickney²	Cook	.
Still Meadows²	Kane	.
Stillman Valley^{1, 2}	Ogle	.
Stillwell^{1, 2}	Hancock	.
Stiritz²	Williamson	.
Stockdale²	Grundy	.
Stockland^{1, 2}	Iroquois	.
Stockton^{1, 2}	Jo Daviess	.
Stoehrs^{1, 2}	Tazewell	.
Stokes^{1, 2}	White	.
Stoke's Settlement⁵	Union	.
Stolle²	St. Clair	.
Stolletown²	Clinton	.
Stone²	Hardin	.
Stone Church^{1, 2}	Washington	.
Stone Fort^{1, 2}	Jackson	.
Stone Park²	Cook	.
Stonefort²	Williamson	.
Stoneyville²	La Salle	.
Stonington^{1, 2, 6}	Christian	Stonington twp
Stony Island^{1, 2}	Cook	.
Stout's Grove Settlement⁵	McLean	.
Stoy^{1, 2}	Crawford	.
Strasburg^{1, 2}	Shelby	.
Stratford^{1, 2}	Ogle	.
Stratton²	Jefferson	.
Straut^{1, 2}	Pike	.
Strawn^{1, 2}	Livingston	.
Strawn's Crossing²	Morgan	.
Strawn's Settlement⁵	Putnam	.
Streadle²	Sangamon	.
Streamwood²	Cook	.
Streator^{1, 2}	La Salle	.
Strickland Ford^U	Christian	Mosquito twp
String Town⁵	Lawrence	.
Stringtown^{1, 2}	Richland	.
Stringtown²	Stark	Essex twp
Stronghurst^{1, 2}	Henderson	.
Stubblefield^{1, 2}	Bond	.
Sturbridge Village²	Winnebago	.
Sublette^{1, 2}	Lee	.
Suddeth²	Sangamon	.
Suez¹	Mercer	.
Sugar Creek Ranch²	Johnson	.
Sugar Creek Settlement⁵	Tazewell	.
Sugar Grove^{1, 2}	Kane	.
Sugar Grove	Mercer	.
Sugar Grove⁵	Sangamon	.
Sugar Grove²	Schuyler	.
Sugar Island²	Kankakee	.
Sugarloaf Heights²	St. Clair	.
Sullivan^{1, 2}	Moultrie	.
Sullivan Center²	Livingston	historical
Sulphur Springs²	La Salle	.
Sulphur Springs²	Williamson	historical
Summer Hill^{1, 2}	Pike	.
Summerfield^{1, 2}	St. Clair	.
Summersville²	Jefferson	.
Summerville²	Macoupin	.
Summit^{1, 2, 5}	Cook	.
Summit^{1, 2}	St. Clair	.
Summum^{1, 2}	Fulton	.
Sumner^{1, 2}	Lawrence	.
Sun River Terrace²	Kankakee	.
Sunbeam^{1, 2}	Mercer	.
Sunbury^{1, 2}	Livingston	.
Sunfield^{1, 2}	Perry	.
Sunny Crest²	Cook	.
Sunny Hill²	Pike	.
Sunny Hill (Estates)^{1, 2}	Henry	.
Sunnybrook Meadows²	Adams	.
Sunnyland²	Tazewell	.
Sunnyside²	McHenry	.
Sunnyside²	Stephenson	.
Sunnyside²	Williamson	.
Sunrise Hills²	Montgomery	.
Sunrise Ridge²	McHenry	.
Sunset Harbor²	Williamson	.
Sunset (Villa)^{1, 2}	Kane	.
Surrey^{1, 2}	Warren	.
Sutter^{1, 2}	Hancock	.
Sutter²	Tazewell	.
Sutton²	Cook	.
Swan Creek^{1, 2}	Warren	.
Swansea²	St. Clair	.
Swanwick^{1, 2}	Perry	.
Swedona^{1, 2}	Mercer	.
Sweet Home²	Jo Daviess	historical
Sweet Water^{1, 2}	Menard	.
Swift²	DuPage	.
Swigart's Settlement⁵	St. Clair	.
Swinnington's Point⁵	Morgan	.
Swygert^{1, 2}	Livingston	.
Sycamore^{1, 2}	DeKalb	.
Sylvan^{1, 2}	Cass	.
Sylvan Lake²	Lake	.
Sylvan Woods²	Cook	.
Symerton^{1, 2}	Will	.
Table Grove^{1, 2}	Fulton	.
Tabor²	DeWitt	.
Tacaogane²	Pulaski	historical
Tacusah	Christian	historical; Source: IL Republican, 1872, reprinted: Christian County Genealogical Society Quarterly Newsletter, Fall, 2005, Vol. 22:3.
Talbott²	Tazewell	.
Tallmadge²	Kankakee	.
Tallula^{1, 2}	Menard	.
Tamalco^{1, 2}	Bond	.
Tamalco Township¹⁶	Bond	.
Tamara Heights²	Kane	.
Tamarack^{1, 2}	Will	.
Tamarawa⁵	St. Clair/Monroe	.
Tamaroa^{1, 2}	Perry	.
Tamms²	Alexander	.
Tampico^{1, 2}	Whiteside	.
Tanglewood²	Kane	.
Tankville²	Alexander	.
Tanner Woods²	Kane	.
Tansill^{1, 2}	Pope	.
Tarapin Ridge⁵	St. Clair	.
Tatumville²	Alexander	.
Taylor^{1, 2}	Ogle	.
Taylor²	Pike	.
Taylor Hill^{1, 2}	Franklin	.
Taylor Ridge^{1, 2}	Rock Island	.
Taylor Springs²	Montgomery	.
Taylorville^{1, 2, 6}	Christian	Taylorville twp; county seat
Tazewell²	Tazewell	.
Techny²	Cook	historical
Tecumseh⁵	White	.
Teheran^{1, 2}	Mason	.
Temple Hill^{1, 2}	Pope	.
Tennessee^{1, 2}	McDonough	.
Terra Cotta^{1, 2}	McHenry	.
Terre Haute^{1, 2}	Henderson	.
Teutopolis^{1, 2}	Effingham	.
Texas City^{1, 2}	Saline	.
Texas Junction²	Jackson	.
Texico²	Jefferson	.
Thackeray^{1, 2}	Hamilton	.
Thawville^{1, 2}	Iroquois	.
Thayer²	Sangamon	.
The Burg²	Lee	.
The Cottage²	Cook	.
The Crossroads²	Calhoun	.
The Grove^{1, 2}	Cook	.
The Hall²	Union	.
The Knolls²	Kane	.
The Landings²	Kane	.
Thebes^{1, 2}	Alexander	.
Third Lake²	Lake	.
Thomas^{1, 2}	Bureau	.
Thomas^{1, 2}	Vermilion	.
Thomasboro^{1, 2, 6}	Champaign	.
Thomasville^{1, 2}	Montgomery	.
Thompsonville^{1, 2}	Franklin	.
Thomson^{1, 2, 6}	Carroll	.
Thornton^{1, 2, 5}	Cook	.
Thornton Junction^{1, 2}	Cook	.
Three Mile Prairie^{1, 2}	Washington	.
Thurber²	Hamilton	.
Tice^{1, 2}	Menard	.
Ticona^{1, 2}	La Salle	.
Tilden^{1, 2}	Randolph	.
Tillman^{1, 2}	St. Clair	.
Tilton^{1, 2}	Vermilion	.
Timber Ridge²	McLean	.
Timbercrest²	Kane	.
Timbered Settlement⁵	Wabash	.
Timberlane²	Boone	.
Time^{1, 2}	Pike	.
Timewell²	Brown	.
Timmons²	Williamson	.
Timothy^{1, 2}	Cumberland	.
Tinley Park^{1, 2}	Cook	.
Tioga^{1, 2}	Hancock	.
Tipton²	Champaign	.
Tipton²	Monroe	.
Tiskilwa^{1, 2}	Bureau	.
Tison²	Saline	.
Titus²	Greene	.
Todds Mill²	Perry	.
Todds Point^{1, 2}	Shelby	.
Toledo^{1, 2}	Cumberland	.
Tolono^{1, 2, 6}	Champaign	.
Toluca^{1, 2}	Marshall	.
Tom's Prairie⁵	Wayne	.
Tomahawk Bluff²	La Salle	.
Tomlinson^{1, 2}	Champaign	.
Tonica^{1, 2}	La Salle	.
Tonti^{1, 2}	Marion	.
Topeka^{1, 2}	Mason	.
Torino²	Will	.
Toronto²	Sangamon	.
Totten's Prairie⁵	Fulton	.
Toulon^{1, 2}	Stark	Toulon twp
Tovey²	Christian	South Fork twp
Tovey Humphrey Station²	Christian	.
Towanda^{1, 2}	McLean	.
Tower Heights²	Sangamon	.
Tower Hill^{1, 2}	Shelby	.
Tower Lake²	Lake	.
Town of Illinois⁴	St. Clair	1823 Gazetteer
Towne Oaks²	Tazewell	.
Trailpark Gardens²	Tazewell	.
Tremont^{1, 2, 5}	Tazewell	.
Trenton^{1, 2}	Clinton	.
Trenton Corners²	Knox	.
Trilla^{1, 2}	Coles	.
Trimble^{1, 2}	Crawford	.
Trinity⁵	?	.
Triumph^{1, 2}	La Salle	.
Trivoli^{1, 2}	Peoria	.
Troster²	McLean	.
Trout Valley²	McHenry	.
Trowbridge^{1, 2}	Shelby	.
Troxel²	Kane	.
Troy²	Fulton	historical
Troy^{1, 2, 4, 5}	Madison	1823 Gazetteer
Troy Crossing²	Madison	.
Troy Grove^{1, 2}	La Salle	.
Troy Junction²	Madison	.
Truro^{1, 2}	Knox	.
Truxton⁶	Bureau	post office
Tucker¹	Kankakee	.
Tuckers Corners²	Hamilton	.
Tullamore¹	Tazewell	.
Tunbridge²	DeWitt	.
Tunnel Hill^{1, 2}	Johnson	.
Turkey Hill^{4, 5}	St. Clair	1823 Gazetteer
Turner¹	DuPage	.
Turner Camp²	McHenry	.
Turner Landing²	Calhoun	.
Turpin^{1, 2}	Macon	.
Tuscarora²	Peoria	.
Tuscola^{1, 2}	Douglas	.
Twelvemile Corner²	Lee	.
Twin Churches²	Fayette	.
Twin Grove^{1, 2}	McLean	.
Twitchell's Mill⁵	Pope	post office
Udina^{1, 2}	Kane	.
Ulah^{1, 2}	Henry	.
Ullin^{1, 2}	Pulaski	.
Ullrich^{1, 2}	Moultrie	.
Ulma⁶	Adams	.
Undercliff²	Putnam	.
Union⁵	Champaign	post office
Union²	Logan	.
Union^{1, 2}	Mason	.
Union^{1, 2}	McHenry	.
Union²	Will	.
Union Center^{1, 2}	Cumberland	.
Union Grove⁵	St. Clair	.
Union Grove^{1, 2}	Whiteside	.
Union Hill^{1, 2}	Kankakee	.
Union Hill²	St. Clair	.
Union Point²	Union	.
Union Prairie⁵	Clark	.
Union Town²	Marion	.
Uniontown²	Knox	.
Unionville^{1, 2}	Massac	.
Unionville²	Vermilion	.
Unionville²	Whiteside	.
Unity^{1, 2, 5}	Alexander	.
University Park²	Cook	.
University Park²	Will	.
University Village²	McDonough	.
University²	Hamilton	.
Upper Alton^{1, 2, 5}	Madison	.
Upper Mackinau Settlements⁵	McLean	.
Urbain²	Franklin	.
Urbana^{1, 2, 5, 6}	Champaign	aka Urbana City⁶
Urbandale²	Alexander	.
Ursa^{1, 2, 5}	Adams	.
Ursa Township¹⁴	Adams	.
Ustick^{1, 2}	Whiteside	.
Utah^{1, 2}	Warren	.
Utica⁵	Fulton	.
Utica^{1, 2}	La Salle	.
Utility^U	Logan	.
Utopia^{1, 2}	DuPage	.
Valentine's Settlement⁵	Bond	.
Valier²	Franklin	.
Valier Patch²	Franklin	.
Valley²	Stark	Valley twp
Valley City^{1, 2}	Pike	.
Valley Creek²	Stephenson	historical
Valley Mission²	Union	.
Valley View²	DuPage	.
Valley View²	Kane	.
Valmeyer²	Monroe	.
Van Buren⁵	Champaign	post office
Van Buren⁵	Whiteside	.
Van Burensburg²	Montgomery	.
Van Orin^{1, 2}	Bureau	.
Van Petten²	Lee	.
Van Wood	Sangamon	.
Vance's Settlement⁵	McDonough	.
Vancil's Settlement⁵	Union	.
Vandalia^{2, 4, 5}	Fayette	1823 Gazatteer
Vandercook^{1, 2}	Vermilion	.
Vanderville²	Christian	Greenwood twp (has never had an incorporated town)
Vandewenter's Settlement⁵	Schuyler	.
Vanland²	Ogle	historical
Vanorin²	Bureau	post office
Varna^{1, 2}	Marshall	.
Vaughn^U	Christian	Prairieton twp
Vedder⁶	Calhoun	.
Velma^{1, 2}	Christian	Locust twp
Venedy^{1, 2}	Washington	.
Venetian Village²	Lake	.
Venice^{1, 2}	Madison	.
Vera^{1, 2}	Fayette	.
Vergennes^{1, 2}	Jackson	.
Vermilion^{1, 2}	Edgar	.
Vermilion City²	Livingston	.
Vermilion Grove^{1, 2}	Vermilion	.
Vermilion Heights²	Vermilion	.
Vermilion Rapids⁸	Vermilion	historical, a town on paper only
Vermilionville^{1, 2, 5}	La Salle	.
Vermont^{1, 2}	Fulton	.
Vernal^{1, 2}	Vermilion	.
Vernon^{1, 2}	Marion	.
Vernon Hills²	Lake	.
Verona^{1, 2}	Grundy	.
Versailles^{1, 2}	Brown	.
Versailles⁵	McLean	.
Vevay Park^{1, 2}	Cumberland	.
Victoria^{1, 2}	Knox	.
Vienna^{1, 2, 4, 5}	Johnson	1823 Gazatteer
Vienna Township¹³	Grundy	.
Villa Grove^{1, 2}	Douglas	.
Villa Park²	DuPage	.
Villa Ridge^{1, 2}	Pulaski	.
Villas^{1, 2}	Crawford	.
Viola^{1, 2}	Mercer	.
Virden^{1, 2}	Macoupin	.
Virgil²	Fulton	historical
Virgil²	Kane	.
Virginia^{1, 2, 6}	Cass	.
Virginia Settlement⁵	McHenry	.
Volo^{1, 2}	Lake	.
Von Glen Acres²	Ogle	.
Vonn^U	Christian	.
Voorhies^{1, 2}	Piatt	.
Vulcan^{1, 2}	St. Clair	.
Wabash Point^{2, 5}	Coles	.
Wacker²	Carroll	.
Waddams Grove^{1, 2}	Stephenson	.
Waddle Settlement^U	Christian	.
Wadsworth^{1, 2}	Lake	.
Wady Petra^{1, 2}	Stark	Valley twp
Waggoner^{1, 2}	Montgomery	.
Wagon Creek Heaven²	Johnson	.
Wait's Settlement⁵	Bond	.
Wakefield^{1, 2}	Richland	.
Wakefield's Settlement⁵	Shelby	.
Walden²	Stark	Penn twp
Waldo²	Livingston	.
Waldron²	Henry	historical
Waldron¹	Kankakee	historical
Walker^{1, 2}	Macon	.
Walker^{1, 2}	Will	.
Walker's Grove⁵	DuPage	.
Walker's Grove⁵	McDonough	.
Walker's Neck⁶	Brown	.
Walkerville^{1, 2, 6}	Greene	.
Walla Walla^{1, 2}	Cumberland	.
Wallaceville^U	Christian	Bear Creek twp (before 1839 this twp was part of Montgomery Co.)
Wallingford^{1, 2}	Will	.
Walnut^{1, 2}	Bureau	.
Walnut²	Tazewell	.
Walnut Grove Settlement⁵	Edgar	.
Walnut Grove²	Knox	historical
Walnut Grove^{1, 2}	McDonough	.
Walnut Grove²	Putnam	.
Walnut Grove²	Stark	West Jersey twp
Walnut Hill^{1, 2, 5}	Marion	.
Walnut Point⁵	Adams	.
Walnut Prairie^{1, 2}	Clark	.
Walpole^{1, 2}	Hamilton	.
Walsh²	Randolph	.
Walshville^{1, 2}	Montgomery	.
Waltersburg^{1, 2}	Pope	.
Waltham²	La Salle	.
Walton^{1, 2}	Lee	.
Waltonville²	Jefferson	.
Walz²	Vermilion	.
Wamac²	Clinton	.
Wanborough^{2, 4}	Edwards	historical; 1823 Gaz.
Wanda^{1, 2}	Madison	.
Wanlock²	Mercer	.
Wapella^{1, 2}	DeWitt	.
Wapello⁵	Jo Daviess	.
Wappa⁷	Bureau	aka Indiantown; later known as Tiskilwa
Ward²	Jackson	.
Ward²	Kankakee	.
Ward's Settlement⁵	Macon	.
Ware^{1, 2}	Union	.
Warick^U	Logan	.
Warner^{1, 2}	Henry	.
Warnock²	Monroe	.
Warren^{1, 2}	Jo Daviess	.
Warrenhurst^{1, 2}	DuPage	.
Warrensburg^{1, 2}	Macon	.
Warrenton⁵	Cook	.
Warrenville^{1, 2}	DuPage	.
Warrington^{1, 2}	Edgar	.
Warsaw^{1, 2}	Hancock	.
Wartburg^{1, 2}	Monroe	.
Wartrace^{1, 2}	Johnson	.
Wasco^{1, 2}	Kane	.
Washburn^{1, 2}	Woodford	.
Washington⁵	Fulton	.
Washington^{1, 2, 5}	Tazewell	.
Washington^{1, 2, 4}	Washington	1823 Gazetteer
Washington Heights¹	Cook	.
Washington Park²	St. Clair	.
Wasson²	Saline	.
Wataga^{1, 2}	Knox	.
Water Valley²	Union	.
Waterford²	Fulton	historical
Waterloo^{1, 2, 4, 5}	Monroe	1823 Gazetteer
Waterman^{1, 2}	DeKalb	.
Watertown²	Ogle	.
Watertown²	Richland	historical
Watertown¹	Rock Island	.
Watkins²	DeWitt	.
Watkins Ford²	Pope	.
Watseka^{1, 2}	Iroquois	.
Watson^{1, 2}	Effingham	.
Watt's Settlement⁵	Crawford	.
Wauconda^{1, 2}	Lake	.
Waukegan^{1, 2}	Lake	.
Wauponsee^{1, 2}	Grundy	.
Wauponsee Township¹³	Grundy	.
Waverly^{1, 2}	Morgan	.
Wayland^{1, 2}	Schuyler	.
Wayne^{1, 2}	DuPage	.
Wayne²	Kane	.
Wayne Center²	DuPage	.
Wayne City^{1, 2}	Wayne	.
Waynesville^{1, 2}	DeWitt	.
Waynesville⁵	McLean	.
Weaver²	Clark	.
Webb's Hill¹	Franklin	.
Webb's Prairie & Settlement⁵	Franklin	.
Webster^{1, 2}	Hancock	.
Webster²	Iroquois	.
Webster⁵	Livingston	.
Webster Park²	Bureau	.
Wedges Corner²	Lake	.
Wedron^{1, 2}	La Salle	.
Weed's Settlement⁵	Livingston	.
Weedman^{1, 2}	McLean	.
Weigle's Settlement⁵	Adams	.
Weir²	Clark	.
Welco Corners²	Will	.
Weldon^{1, 2}	DeWitt	.
Weldwood Oaks²	Kane	.
Welga/Welge^{1, 2}	Randolph	.
Welland²	Lee	.
Wellington^{1, 2}	Iroquois	.
Wells Corners²	Lake	.
Wempletown^{1, 2}	Winnebago	.
Wendel²	Bureau	.
Wendelin²	Clay	.
Wenmoth Acres²	Kane	.
Wenona^{1, 2}	Marshall	.
Wenonah²	Montgomery	.
Wertenberg²	Clinton	.
Wesley^{1, 2}	Tazewell	.
West Brooklyn^{1, 2}	Lee	.
West Chicago²	DuPage	.
West City²	Franklin	.
West Dundee²	Kane	.
West End^{1, 2}	Saline	.
West Frankfort²	Franklin	.
West Grand Place²	Sangamon	.
West Hallock^{1, 2}	Peoria	.
West Highland Acres²	Kane	.
West Jersey^{1, 2}	Stark	West Jersey twp
West Junction²	Stephenson	.
West Kankakee²	Kankakee	.
West Lake Forest²	Lake	.
West Liberty^{1, 2}	Jasper	.
West Lincoln²	Logan	.
West Newell^{1, 2}	Vermilion	.
West Peoria²	Peoria	.
West Point^{1, 2}	Hancock	.
West Point²	Jackson	.
West Ridge^{1, 2}	Douglas	.
West Rural Hill²	Hamilton	.
West Salem^{1, 2}	Edwards	.
West Sandford²	Edgar	.
West Union^{1, 2}	Clark	.
West Vienna²	Johnson	.
West York^{1, 2}	Crawford	.
West's Settlement⁵	Johnson	.
Westchester²	Cook	.
Western Springs^{1, 2}	Cook	.
Westervelt²	Shelby	.
Westfield^{1, 2, 6}	Clark	.
Westfield Corners²	Winnebago	.
Westminster²	Shelby	historical
Westmont²	DuPage	.
Westmoreland²	Winnebago	.
Weston²	Jo Daviess	historical
Weston^{1, 2}	McLean	.
Westport^{1, 2}	Lawrence	.
Westview²	St. Clair	.
Westview Acres²	Fulton	.
Westville^{1, 2}	Vermilion	.
Wetaug^{1, 2}	Pulaski	.
Wetzel^{1, 2}	Edgar	.
Weybridge²	Kane	.
Wheatland¹	Alexander	.
Wheaton^{1, 2}	DuPage	.
Wheeler^{1, 2}	Jasper	.
Wheeling^{1, 2}	Cook	.
Whitaker²	Kankakee	.
White Ash²	Williamson	.
White City²	Cass	.
White City²	Cook	historical
White City²	Macoupin	.
White City²	Mason	.
White Hall^{1, 2, 5}	Greene	.
White Hall Point²	Mason	historical
White Head²	DeWitt	.
White Heath^{1, 2}	Piatt	.
White Hill²	Johnson	.
White House²	Montgomery	.
White Oak^{1, 2}	Montgomery	.
White Oak Grove²	McLean	.
White Pigeon^{1, 2}	Whiteside	.
White Pines²	DuPage	.
White Plains²	Jersey	.
White Rock^{1, 2}	Ogle	.
White Willow²	Kendall	historical
Whitecraft Settlement^U	Christian	.
Whitefield^{1, 2}	Bureau	.
Whiteoak^{1, 2}	St. Clair	.
Whites (Siding)^{1, 2}	White	.
Whiteside's Settlement⁵	Pope	.
Whiteside's Station⁵	Monroe	.
Whitesville²	Saline	historical
Whitley's Settlement⁵	Shelby	.
Whittington²	Franklin	.
Whitton²	Jo Daviess	.
Wichert²	Kankakee	.
Wideview²	Kane	.
Wilbern^{1, 2}	Marshall	.
Wilberton^{1, 2}	Fayette	.
Wilbur Heights²	Champaign	.
Wilcoxen's Settlement⁵	Fulton	.
Wilderman^{1, 2}	St. Clair	.
Wildrose²	Kane	.
Wildwood²	Lake	.
Wildwood Valley²	Kane	.
Wilkinson²	DeKalb	.
Wilkinsonville⁴	.	1823 Gazetteer
Willard^{1, 2}	Alexander	.
Willeford²	Williamson	.
Willey^{1, 2, 6}	Christian	May twp (originally part of Taylorville & Stonington precincts until 1866, previously known as "Smith" then "Howard")
Williams Park²	Lake	.
Williamsburg²	Jefferson	.
Williamsburg^{1, 2}	Moultrie	.
Williamsburg²	Shelby	historical
Williamsburg Green²	Kane	.
Williamsburg Hill²	Shelby	.
Williamsfield^{1, 2}	Knox	.
Williamson²	Madison	.
Williamsville^{1, 2}	Sangamon	.
Willis's Settlement⁵	Putnam	.
Willisville²	Perry	.
Willow^{1, 2}	Jo Daviess	.
Willow Creek²	Kane	.
Willow Hill^{1, 2}	Jasper	.
Willowbrook²	DuPage	.
Willowbrook²	Will	.
Willow Ridge²	Grundy	.
Willow Springs^{1, 2}	Cook	.
Wilmert^U	Logan	.
Wilmette^{1, 2}	Cook	.
Wilmington^{1, 2}	Will	.
Wilsman^{1, 2}	La Salle	.
Wilson²	Lake	.
Wilson Heights²	Madison	.
Wilsonburg²	Richland	historical
Wilsonville²	Macoupin	.
Wilton (Center)²	Will	.
Winchester⁵	Morgan	.
Winchester²	Scott	.
Windenoak²	Kane	.
Windsor²	Shelby	.
Wine Hill²	Randolph	.
Winfield²	DuPage	.
Wing²	Livingston	.
Winkel²	Tazewell	.
Winkle²	Perry	.
Winnebago²	Winnebago	.
Winneberger²	Calhoun	.
Winneshiek²	Stephenson	.
Winnetka²	Cook	.
Winslow²	Stephenson	.
Winston²	Jo Daviess	.
Winterrowd²	Effingham	.
Winthrop Harbor²	Lake	.
Winthrop Harbor Station²	Lake	.
Wisetown¹⁶	Bond	aka Beaver Creek, named after the founder, David W. Wise¹⁶
Witt²	Montgomery	.
Woburn²	Bond	originally known as Cross Roads, then Newport¹⁵
Wolf Creek²	Williamson	.
Wolf Lake²	Mason	.
Wolf Lake²	Union	.
Wolfs²	Kendall	.
Womac²	Macoupin	.
Wonder Center²	McHenry	.
Wonder Lake²	McHenry	.
Wood Dale²	DuPage	.
Wood River²	Madison	.
Wood Spur²	Grundy	.
Woodbine²	Jo Daviess	.
Woodburn²	Macoupin	.
Woodbury⁵	Coles	.
Woodbury²	Cumberland	.
Woodcrest²	Henry	.
Woodcrest²	St. Clair	.
Woodford²	Woodford	.
Woodhull²	Henry	.
Woodland²	Iroquois	.
Woodland²	Kankakee	.
Woodland Acres²	Ogle	.
Woodland Hills²	Kane	.
Woodland Hills²	Whiteside	.
Woodland Hills²	Williamson	.
Woodland Junction²	Iroquois	.
Woodland Shores²	Lee	.
Woodlawn²	Jefferson	.
Woodlawn²	Logan	.
Woodridge²	DuPage	.
Woodridge²	Lake	.
Woodruff²	McLean	.
Woodruff Corners²	Stephenson	.
Woods²	Madison	.
Woodside^{1, 2}	Sangamon	.
Woodson^{1, 2}	Morgan	.
Woodstock^{1, 2}	McHenry	.
Woodvale²	Warren	.
Woodville^{1, 2}	Adams	.
Woodville⁶	Jersey	.
Woodville²	Monroe	historical
Woodworth^{1, 2}	Iroquois	.
Woody^{1, 2}	Greene	.
Woodyard^{1, 2}	Edgar	.
Woolf^U	Logan	.
Woosung^{1, 2}	Ogle	.
Worcester⁵	McDonough	.
Worden^{1, 2}	Madison	.
Workman⁵	Morgan	.
Worth^{1, 2}	Cook	.
Wrayville^{1, 2}	Rock Island	.
Wrights^{1, 2}	Greene	.
Wrights Corner²	Fayette	.
Wyanet^{1, 2}	Bureau	.
Wyatt²	Logan	Essex
Wyckles^{1, 2}	Macon	.
Wyckles Corners²	Macon	.
Wynoose^{1, 2}	Richland	.
Wyoming^{1, 2}	Stark	.
Wyton²	Vermilion	.
Xenia^{1, 2}	Clay	.
Xenia^{1, 2}	Logan	.
Yale^{1, 2}	Jasper	.
Yankee Settlement⁵	Cook/Will	.
Yankeetown^{1, 2}	Logan	.
Yantisville^{1, 2}	Shelby	.
Yates City^{1, 2}	Knox	.
Yatesville²	Morgan	.
Yeager²	Kankakee	.
Yellow Banks²	Henderson	.
Yellow Creek^{1, 2}	Stephenson	.
Yeomans²	Morgan	.
Yeoward Addition²	Whiteside	.
York^{1, 2, 4, 5}	Clark	1823 Gazetteer
York Center²	DuPage	.
York Neck⁶	Adams	.
Yorkfield²	DuPage	.
Yorktown^{1, 2}	Bureau	.
Yorkville^{1, 2}	Kendall	.
Youngsdale^{1, 2}	Kane	.
Youngstown^{1, 2}	Warren	.
Yuton^{1, 2}	McLean	.
Zanesville^{1, 2}	Montgomery	.
Zearing²	Bureau	.
Zeigler²	Franklin	.
Zenith²	Wayne	.
Zenobia^U	Christian	South Fork twp
Zenobia^{1, 2}	Sangamon	.
Zier Cors²	Carroll	.
Zif¹	Wayne	.
Zion⁶	Bond	.
Zion²	Lake	.

For corrections or additions, please contact me: Sandy Bauer