County
· Illinois
Cook County
Cook County is the most populous county in the U.S. state of Illinois and the second-most-populous county in the United States, after Los Angeles County, California. More than 40 percent of all residents of Illinois live within Cook County. As of 2020, the population was 5,275,541. The county seat is Chicago, the most populous city in Illinois and the third most populous city in the United States. The county is at the center of the Chicago metropolitan area.
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Cities and towns 121
- Village of Glenview pop. 47,856
- Village of Glenwood pop. 8,477
- Village of Golf pop. 507
- Village of Hanover Park pop. 36,774
- Village of Harwood Heights pop. 8,836
- Village of Hazel Crest pop. 13,098
- Village of Hillside pop. 8,142
- Village of Hodgkins pop. 1,472
- Village of Hoffman Estates pop. 51,350
- Village of Homewood pop. 19,001
- Village of Indian Head Park pop. 4,008
- Village of Inverness pop. 7,449
- Village of Justice pop. 12,326
- Village of Kenilworth pop. 2,451
- Village of La Grange pop. 15,978
- Village of La Grange Park pop. 13,234
- Village of Lansing pop. 28,379
- Village of Lemont pop. 17,529
- Village of Lincolnwood pop. 13,191
- Village of Lynwood pop. 8,978
- Village of Lyons pop. 10,552
- Village of Matteson pop. 18,664
- Village of Maywood pop. 23,112
- Village of Mccook pop. 243
- Village of Melrose Park pop. 24,206
- Village of Merrionette Park pop. 1,923
- Village of Midlothian pop. 13,983
- Village of Morton Grove pop. 24,712
- Village of Mount Prospect pop. 55,541
- Village of Niles pop. 30,345
- Village of Norridge pop. 15,009
- Village of North Riverside pop. 7,249
- Village of Northbrook pop. 34,587
- Village of Northfield pop. 5,634
- Village of Oak Lawn pop. 57,013
- Village of Oak Park pop. 53,224
- Village of Olympia Fields pop. 4,654
- Village of Orland Hills pop. 6,725
- Village of Orland Park pop. 57,850
- Village of Palatine pop. 66,321
- Village of Palos Park pop. 4,871
- Village of Park Forest pop. 21,261
- Village of Phoenix pop. 1,666
- Village of Posen pop. 5,497
- Village of Richton Park pop. 12,494
- Village of River Forest pop. 11,597
- Village of River Grove pop. 10,531
- Village of Riverdale pop. 10,397
- Village of Riverside pop. 9,061
- Village of Robbins pop. 4,627
Townships 28
- Township of Barrington pop. 16,262
- Township of Berwyn pop. 55,772
- Township of Bloom pop. 84,167
- Township of Bremen pop. 104,849
- Township of Calumet pop. 18,138
- Township of Elk Grove pop. 93,384
- Township of Hanover pop. 97,879
- Township of Lemont pop. 22,436
- Township of Leyden pop. 91,421
- Township of Lyons pop. 112,735
- Township of Maine pop. 137,650
- Township of New Trier pop. 56,180
- Township of Niles pop. 110,131
- Township of Northfield pop. 89,863
- Township of Norwood Park pop. 26,878
- Township of Oak Park pop. 53,224
- Township of Orland pop. 96,470
- Township of Palatine pop. 111,886
- Township of Palos pop. 55,667
- Township of Proviso pop. 148,114
- Township of Rich pop. 74,482
- Township of River Forest pop. 11,597
- Township of Riverside pop. 16,272
- Township of Schaumburg pop. 131,970
- Township of Stickney pop. 40,597
- Township of Thornton pop. 154,231
- Township of Wheeling pop. 154,241
- Township of Worth pop. 149,417
Reference data (Census of Governments 2022)
- Census ID (PID6)
- 102545
- FIPS state
- 17
- FIPS county
- 031
- FIPS place
- 99031
- Census record name
- COUNTY OF COOK
- Mailing address
- 118 N CLARK ST, CHICAGO 60602