Cook

County in Illinois

Contents: Subdivision

The population development in Cook as well as related information and services (Wikipedia, Google, images).

The Details icon links to further information about a selected division including its population structure (gender, age groups, age distribution, urbanization, »race«, ethnicity).

Name	Status	Population Census 1990-04-01	Population Census 2000-04-01	Population Census 2010-04-01	Population Census 2020-04-01	Population Estimate 2024-07-01
Cook	County	5,105,067	5,376,741	5,194,675	5,278,969	5,182,617
Barrington	Township	12,977	14,095	15,639	16,519	16,240	→
Berwyn	Township	45,538	54,030	56,650	57,233	55,152	→
Bloom	Township	95,025	93,892	90,973	86,027	83,626	→
Bremen	Township	107,860	109,530	110,069	107,215	104,285	→
Calumet	Township	20,999	22,378	20,770	18,606	17,964	→
Chicago	City	2,783,485	2,895,964	2,695,674	2,748,331	2,721,308	→
Cicero	Township	67,441	85,993	84,241	85,289	82,090	→
Elk Grove	Township	87,790	94,956	92,777	95,499	92,996	→
Evanston	City	73,224	74,269	74,483	78,102	76,006	→
Hanover	Township	62,328	83,274	99,544	100,067	97,751	→
Lemont	Township	11,533	18,051	21,115	22,660	22,918	→
Leyden	Township	89,103	94,693	92,879	93,128	90,471	→
Lyons	Township	104,992	109,383	111,807	115,146	112,291	→
Maine	Township	129,010	135,624	135,752	140,575	136,256	→
New Trier	Township	54,712	56,658	55,381	57,374	56,064	→
Niles	Township	96,387	102,576	105,900	112,400	109,048	→
Northfield	Township	78,188	82,939	85,085	91,574	89,504	→
Norwood Park	Township	25,643	26,228	26,377	27,439	26,582	→
Oak Park	Township	53,696	52,518	51,878	54,773	52,947	→
Orland	Township	69,584	91,418	97,533	98,268	96,553	→
Palatine	Township	103,307	112,706	112,961	114,456	111,316	→
Palos	Township	50,946	53,403	54,607	56,844	55,406	→
Proviso	Township	152,378	155,685	151,606	151,215	147,156	→
Rich	Township	61,399	67,629	76,656	76,156	73,996	→
River Forest	Township	11,680	11,640	11,176	12,261	11,909	→
Riverside	Township	15,208	15,324	15,587	16,702	16,112	→
Schaumburg	Township	127,637	134,109	131,407	134,862	131,447	→
Stickney	Township	37,288	38,678	40,772	41,524	40,302	→
Thornton	Township	175,860	180,879	169,378	157,879	152,759	→
Wheeling	Township	148,596	155,975	153,720	157,506	153,558	→
Worth	Township	151,230	152,244	152,627	153,339	148,604	→
Illinois	State	11,430,602	12,419,293	12,830,632	12,821,814	12,710,158

Source: U.S. Census Bureau.

Explanation: Latest available rebased population figures are used. In case of significant changes, they were recalculated by using census block data.

Further information about the population structure:

Gender (C 2020)
Males	2,555,621
Females	2,719,920

Age Groups (C 2020)
0-17 years	1,103,139
18-64 years	3,377,943
65+ years	794,459

Age Distribution (C 2020)
80+ years	190,231
70-79 years	339,682
60-69 years	585,781
50-59 years	657,393
40-49 years	673,972
30-39 years	798,116
20-29 years	797,271
10-19 years	649,919
0-9 years	583,176

Urbanization (C 2020)
Rural	2,890
Urban	5,272,651

»Race« (C 2020)
White	2,345,983
Black/African American	1,205,824
Indigenous	56,894
Asian	413,271
Pacific Islander	1,864
Some other	705,153
2 or more	546,552

Ethnicity (C 2020)
Hispanic or Latino	1,382,778
Other	3,892,763