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Illinois Map

Every county, city and town in Illinois on one zoomable map, with interstates, US highways, rivers and lakes. Switch on towns and counties above the map and zoom in for every name; tap a county to see its seat, population and largest towns.

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Printable maps of Illinois

Free to print for class and home: Illinois with its cities and towns, a county map with every county and county seat, and a blank outline map. PDFs fit one A4 or US Letter page.

Illinois map with cities

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Illinois county map

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Blank map of Illinois

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About Illinois

Illinois has 102 counties, 300 cities, 16 towns, 978 villages and 168 Census-designated communities, and about 12,719,141 people (2025 estimate) on 143,778 km² (55,513 sq mi) of land. The capital is Springfield; the largest city is Chicago, with 2,731,585 people. It borders Indiana, Iowa, Kentucky, Missouri and Wisconsin.

Cook County is the most populous county (5,194,625 people) and Hardin County the least (3,588); McLean County is the largest by land area (3,065 km²) and Putnam County the smallest (415 km²).

Largest cities in Illinois

The 25 most populous cities and towns. All 1,462 are on the map above: switch on Towns and zoom in to see them.

#CityCountyPopulation
1ChicagoCook County2,731,585
2AuroraKane County181,505
3NapervilleDuPage County153,114
4JolietWill County152,241
5RockfordWinnebago County147,384
6ElginKane County115,476
7SpringfieldSangamon County112,989
8PeoriaPeoria County110,920
9ChampaignChampaign County91,195
10WaukeganLake County87,940
11CiceroCook County81,858
12BloomingtonMcLean County78,804
13SchaumburgCook County77,249
14EvanstonCook County76,380
15Arlington HeightsCook County76,216
16BolingbrookWill County74,803
17DecaturMacon County67,884
18SkokieCook County66,544
19PalatineCook County65,842
20Des PlainesCook County58,772
21Orland ParkCook County57,954
22Oak LawnCook County56,450
23Mount ProspectCook County55,395
24Tinley ParkCook County55,140
25BerwynCook County55,001

Populations are US Census Bureau estimates for July 2025, within city or town limits.

Counties of Illinois

All 102 counties with their county seats. Select one to show it on the map.

Counties of Illinois. Select a column heading to sort; select a name to show it on the map.
Quincy64,2672,215
Cairo4,570610
Greenville16,959985
Belvidere53,568727
Mount Sterling6,401792
Princeton32,5102,251
Hardin4,300657
Mount Carroll15,4191,154
Virginia12,463973
Urbana209,9722,580
Taylorville33,4431,838
Marshall15,1141,299
Louisville12,7931,213
Carlyle37,1281,228
Charleston46,6071,316
Chicago5,194,6252,447
Robinson18,6481,149
Toledo10,208896
Clinton15,1181,030
Sycamore101,8351,635
Tuscola19,8801,079
Wheaton934,298849
Paris16,3231,614
Albion5,898576
Effingham34,5191,240
Vandalia20,7901,856
Paxton13,2161,258
Benton36,9161,059
Lewistown32,9012,242
Shawneetown4,616836
Carrollton11,3131,407
Morris54,0521,083
McLeansboro7,8591,126
Carthage16,8032,056
Elizabethtown3,588459
Oquawka5,984981
Cambridge48,0952,132
Watseka26,1502,894
Murphysboro52,5011,511
Newton9,0321,281
Mount Vernon36,1471,479
Jerseyville21,160957
Galena21,5941,556
Vienna13,363890
Geneva525,7571,345
Kankakee105,5251,752
Yorkville145,470829
Galesburg47,7671,855
Waukegan719,3391,149
Ottawa107,7732,940
Lawrenceville13,790964
Dixon32,9141,877
Pontiac35,0572,703
Lincoln27,1821,601
Decatur99,3001,504
Carlinville43,7482,235
Edwardsville263,1101,853
Salem36,3821,483
Lacon11,4731,002
Havana12,4111,397
Metropolis13,502614
Macomb25,9161,526
Woodstock317,7511,563
Bloomington171,4193,065
Petersburg11,863814
Aledo15,2291,454
Waterloo34,840998
Hillsboro28,0761,823
Jacksonville32,5151,474
Sullivan14,371870
Oregon51,3991,965
Peoria178,5531,602
Pinckneyville20,1601,145
Monticello16,7911,137
Pittsfield14,2312,153
Golconda3,672955
Mound City4,820516
Hennepin5,619415
Chester29,9211,490
Olney15,219932
Rock Island141,8691,107
Harrisburg22,772984
Springfield194,1702,249
Rushville6,6571,133
Winchester4,866650
Shelbyville20,5761,965
Belleville250,7081,704
Toulon5,319746
Freeport43,2201,461
Pekin130,0491,674
Jonesboro16,6561,071
Danville71,2592,327
Mount Carmel10,907578
Monmouth16,2221,405
Nashville13,5641,457
Fairfield15,8821,849
Carmi13,2501,282
Morrison54,1211,772
Joliet712,2532,165
Marion67,2251,088
Rockford283,6741,329
Eureka38,1111,366

Practise US geography

Find US States on the MapClick each state we nameUS State Capitals QuizAll 50 capitalsUS States Map WorksheetsFree printable blank and labelled US maps

Sources

  • Counties, state borders, city and town locations and highways: US Census Bureau cartographic boundary files, Gazetteer files and TIGER/Line roads (2023).
  • Populations: US Census Bureau Population Estimates, Vintage 2025; Census-designated communities: 2020 Census.
  • County seats and founding years: National Association of Counties (NACo) County Explorer.