Cook County, Illinois Population 2026

Cook County Population

Data after 2023 is projected based on recent change

Year ↓	Population	Growth	Annual Change
2029	5,383,092	40,095	0.75%
2028	5,342,997	40,095	0.76%
2027	5,302,902	40,095	0.76%
2026	5,262,807	40,095	0.77%
2025	5,222,712	40,095	0.77%
2024	5,182,617	40,095	0.78%
2023	5,142,522	9,416	0.18%
2022	5,133,106	-52,028	-1%
2021	5,185,134	-81,938	-1.56%
2020	5,267,072	121,746	2.37%
2019	5,145,326	-25,681	-0.5%
2018	5,171,007	-28,575	-0.55%
2017	5,199,582	-23,804	-0.46%
2016	5,223,386	-19,985	-0.38%
2015	5,243,371	-10,737	-0.2%
2014	5,254,108	1,595	0.03%
2013	5,252,513	13,408	0.26%
2012	5,239,105	19,469	0.37%
2011	5,219,636	20,659	0.4%
2010	5,198,977	93,910	1.84%
1990	5,105,067	-148,588	-2.83%
1980	5,253,655	-238,714	-4.35%
1970	5,492,369	362,644	7.07%
1960	5,129,725	620,933	13.77%
1950	4,508,792	445,450	10.96%
1940	4,063,342	81,219	2.04%
1930	3,982,123	929,106	30.43%
1920	3,053,017	647,784	26.93%
1910	2,405,233	566,498	30.81%
1900	1,838,735	646,813	54.27%
1890	1,191,922	584,398	96.19%
1880	607,524	257,558	73.6%
1870	349,966	205,012	141.43%
1860	144,954	101,569	234.11%
1850	43,385	33,184	325.3%
1840	10,201	0	0%

Median Age

Overall: 38 years
Female: 39 years
Male: 37 years

Cook County Adults

There are 4,089,888 adults, (827,156 of whom are seniors) in Cook County.

Sex Ratio

Female: 2,653,202 (51.2%)
Male: 2,528,888 (48.8%)

Demographics

The racial composition of Cook County includes 43.57% White, 22.15% Black or African American, 12.39% other race, 7.95% Asian, and smaller percentages for Native American, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

Race	Population ↓	Percentage (of total)
White	2,257,930	43.57%
Black or African American	1,148,066	22.15%
Two or more races	672,450	12.98%
Other race	642,144	12.39%
Asian	411,778	7.95%
Native American	47,333	0.91%
Native Hawaiian or Pacific Islander	2,389	0.05%

Race	Population ↓	Percentage (of total)
Other race	621,566	11.99%
Two or more races	519,466	10.02%
White	180,408	3.48%
Native American	43,518	0.84%
Black or African American	17,185	0.33%
Asian	3,919	0.08%
Native Hawaiian or Pacific Islander	1,101	0.02%

Race	Population ↓	Percentage (of total)
White	2,077,522	40.09%
Black or African American	1,130,881	21.82%
Asian	407,859	7.87%
Two or more races	152,984	2.95%
Other race	20,578	0.4%
Native American	3,815	0.07%
Native Hawaiian or Pacific Islander	1,288	0.02%

Cook County Marital Status

Economics and Income Statistics

Cook County 's average per capita income is $57,379. Household income levels show a median of $83,498. The poverty rate stands at 13.49%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.

Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.

Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.

Name	Median ↓	Mean
Married Families	$133,067	$179,093
Families	$104,836	$146,525
Households	$83,498	$120,717
Non Families	$56,576	$81,647

$57,379

Average Income

$83,498

Median Household Income

13.49%

Poverty Rate

Cook County

Cook County Population

Cook County Population

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Median Age

Cook County Adults

Sex Ratio

Demographics

Population by Race

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Cook County Marital Status

Economics and Income Statistics

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$57,379

$83,498

13.49%

Recommended Reading

Sources