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Largest City in Each Illinois County on a Map

Name the largest city in each Illinois county with the help of a map.
Location data downloaded from simplemaps in 2024
Population data downloaded from Illinois Demographics in 2025
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Last updated: May 26, 2026
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First submittedMay 26, 2026
Times taken7
Average score18.6%
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County
Answer
Population
Adams
Quincy
38,803
Alexander
Cairo
1,558
Bond
Greenville
6,979
Boone
Belvidere
25,297
Brown
Mount Sterling
2,016
Bureau
Princeton
7,700
Calhoun
Hardin
786
Carroll
Savanna
2,712
Cass
Beardstown
5,749
Champaign
Champaign
89,189
Christian
Taylorville
10,247
Clark
Marshall
3,879
Clay
Flora
4,711
Clinton
Breese
4,600
Coles
Charleston
17,028
Cook
Chicago
2,664,452
Crawford
Robinson
7,010
Cumberland
Neoga
1,375
De Witt
Clinton
6,898
DeKalb
DeKalb
40,211
Douglas
Tuscola
4,614
DuPage
Naperville
150,245
Edgar
Paris
8,039
Edwards
Albion
1,871
Effingham
Effingham
12,258
Fayette
Vandalia
7,358
Ford
Paxton
4,348
Franklin
West Frankfort
7,145
Fulton
Canton
12,875
Gallatin
Shawneetown
994
Greene
Carrollton
2,394
Grundy
Morris
14,508
Hamilton
McLeansboro
2,610
Hancock
Hamilton
2,689
Hardin
Rosiclare
955
Henderson
Oquawka
1,078
Henry
Kewanee
12,222
Iroquois
Watseka
4,510
Jackson
Carbondale
21,592
Jasper
Newton
2,743
Jefferson
Mount Vernon
14,247
Jersey
Jerseyville
8,263
Jo Daviess
Galena
3,250
Johnson
Vienna
1,343
Kane
Aurora
177,563
Kankakee
Kankakee
23,503
Kendall
Oswego
37,074
Knox
Galesburg
29,130
LaSalle
Ottawa
18,752
Lake
Waukegan
87,642
Lawrence
Lawrenceville
4,245
County
Answer
Population
Lee
Dixon
15,096
Livingston
Pontiac
11,010
Logan
Lincoln
13,072
Macon
Decatur
68,670
Macoupin
Carlinville
5,531
Madison
Granite City
26,908
Marion
Centralia
11,848
Marshall
Henry
2,312
Mason
Havana
2,827
Massac
Metropolis
5,782
McDonough
Macomb
14,849
McHenry
Crystal Lake
40,861
McLean
Bloomington
78,587
Menard
Petersburg
2,197
Mercer
Aledo
3,569
Monroe
Waterloo
11,144
Montgomery
Litchfield
6,614
Morgan
Jacksonville
17,237
Moultrie
Sullivan
4,272
Ogle
Rochelle
9,319
Peoria
Peoria
110,460
Perry
Du Quoin
5,694
Piatt
Monticello
6,018
Pike
Pittsfield
4,072
Pope
Golconda
622
Pulaski
Mounds
616
Putnam
Granville
1,319
Randolph
Chester
6,732
Richland
Olney
8,512
Rock Island
Moline
41,965
Saline
Harrisburg
7,907
Sangamon
Springfield
112,544
Schuyler
Rushville
2,923
Scott
Winchester
1,494
Shelby
Shelbyville
4,560
St. Clair
Belleville
40,726
Stark
Wyoming
1,258
Stephenson
Freeport
23,136
Tazewell
Pekin
31,126
Union
Anna
4,136
Vermilion
Danville
28,206
Wabash
Mount Carmel
6,751
Warren
Monmouth
8,567
Washington
Nashville
3,013
Wayne
Fairfield
4,738
White
Carmi
4,688
Whiteside
Sterling
14,508
Will
Joliet
150,489
Williamson
Marion
16,852
Winnebago
Rockford
146,120
Woodford
Eureka
5,186
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Largest City in Each County on a Map (U.S. States)
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