Cook County, Illinois Population 2024

5,062,578

Cook County, Illinois's estimated 2024 population is 5,062,578 with a growth rate of -0.48% in the past year according to the most recent United States census data. Cook County, Illinois is the largest county in Illinois. The 2010 population was 5,198,977 and has seen a growth of -2.62% since that time.

Note: data after 2022 is projected based on recent change

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Year
Population
Growth
Growth Rate
20294,940,108-24,494-0.49%
20284,964,602-24,494-0.49%
20274,989,096-24,494-0.49%
20265,013,590-24,494-0.49%
20255,038,084-24,494-0.48%
20245,062,578-24,494-0.48%
20235,087,072-24,494-0.48%
20225,111,566-69,353-1.34%
20215,180,919-82,689-1.57%
20205,263,608118,2822.3%
20195,145,326-25,681-0.5%
20185,171,007-28,575-0.55%
20175,199,582-23,804-0.46%
20165,223,386-19,985-0.38%
20155,243,371-10,737-0.2%
20145,254,1081,5950.03%
20135,252,51313,4080.26%
20125,239,10519,4690.37%
20115,219,63620,6590.4%
20105,198,97700%
19905,105,067-148,588-2.83%
19805,253,655-238,714-4.35%
19705,492,369362,6447.07%
19605,129,725620,93313.77%
19504,508,792445,45010.96%
19404,063,34281,2192.04%
19303,982,123929,10630.43%
19203,053,017647,78426.93%
19102,405,233566,49830.81%
19001,838,735646,81354.27%
18901,191,922584,39896.19%
1880607,524257,55873.6%
1870349,966205,012141.43%
1860144,954101,569234.11%
185043,38533,184325.3%
184010,201-4,929,907-99.79%
showing: 36 rows
2024 Growth Rate
-0.48% (-24,494)
County Website
Cook County
County Seat
2020 Population
5,263,608
Area
945 mi²
Density
5357 people/mi²
Growth Since 2020
-3.82% (-201,030)

Cook County, Illinois Population 2024

Population by Race

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Race
Population
Percentage (of total)
White2,580,78949.39%
Black or African American1,189,36522.76%
Other race550,67810.54%
Two or more races467,8148.95%
Asian402,6057.7%
Native American31,6160.61%
Native Hawaiian or Pacific Islander2,5000.05%

White

Black or African American

Other race

Two or more races

Asian

Native American

Native Hawaiian or Pacific Islander

Cook County, Illinois Population by Race

Cook County, Illinois Population Pyramid 2024

Cook County, Illinois Median Age

37.5

Total

36.5

Male

38.6

Female

Cook County, Illinois Adults

There are 4,103,555 adults, (793,931 of whom are seniors) in Cook County, Illinois.

Cook County, Illinois Age Dependency

57.9

Age Dependency Ratio

24

Old Age Dependency Ratio

33.9

Child Dependency Ratio

Cook County, Illinois Sex Ratio

Female2,670,72651.11%
Male2,554,64148.89%

Cook County, Illinois Population by Age

Cook County, Illinois Renter vs Owner Occupied by Household Type

Household Type
Count
Average Size
Owner
Renter
All2,066,2482.4957.542.5
Non Family855,5781.2442.257.8
Married820,6343.357822
Female285,5943.4346.353.7
Male104,4423.3452.747.3

3.28

Average Family Size

2.49

Average Household Size

57.5%

Rate of Home Ownership

Married

Male

Female

NonFamily

owner

renter

Cook County, Illinois Households and Families

Male

Female

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Education Attained
Count
Percentage
Less Than 9th Grade223,3606.14%
9th to 12th Grade205,8535.66%
High School Graduate813,18222.34%
Some College648,33417.81%
Associates Degree246,5356.77%
Bachelors Degree874,09124.01%
Graduate Degree628,62317.27%

Less Than 9th Grade

9th to 12th Grade

High School Graduate

Some College

Associates Degree

Bachelors Degree

Graduate Degree

Cook County, Illinois Educational Attainment by Sex (over 25)

Cook County, Illinois Educational Attainment by Race

High School Graduation Rate

Bachelors Rate

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Race
Total
High School
Bachelors
White1,660,0821,582,730921,423
Black807,947715,206203,561
Hispanic803,086576,027146,204
Other Race332,837225,27048,343
Asian298,030269,940194,311
2+ Races266,011214,58580,166
Native American20,17414,2933,936
Islander1,8611,405528

The highest rate of high school graduation is among white people with a rate of 95.34%.

The highest rate of bachelors degrees is among asian people with a rate of 65.2%.

Cook County, Illinois Educational Attainment by Race

All

Male

Female

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Name
Average
Male
Female
Overall$53,260$59,306$46,756
Less Than 9th Grade$31,679$35,859$25,222
High School Graduate$36,265$42,100$29,726
Some College$43,288$51,361$36,941
Bachelors Degree$70,414$81,561$61,573
Graduate Degree$89,538$107,171$78,527

$53,260

Average Earnings

$59,306

Average Male

$46,756

Average Female

Cook County, Illinois Earnings by Educational Attainment

Cook County, Illinois Language by Age

Only English

Spanish

Other Indo-European Languages

Asian and Pacific Island Languages

Other Languages

Cook County, Illinois Language

64.83% of Cook County, Illinois residents speak only English, while 35.17% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 20.67% of the population.

Cook County, Illinois Language

Cook County, Illinois Poverty by Race

rate

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Name
Total
In Poverty
Poverty Rate
Black1,163,615279,50624.02%
Hispanic1,340,317192,41714.36%
White2,111,257154,2597.31%
Other546,88188,12016.11%
Multiple463,88155,83312.04%
Asian396,58546,45311.71%
Native31,3233,91712.51%
Islander2,44570828.96%

13.38%

Overall Poverty Rate

12.04%

Male Poverty Rate

14.65%

Female Poverty Rate

Poverty in Cook County, Illinois

The race most likely to be in poverty in Cook County, Illinois is Islander, with 28.96% below the poverty level.

The race least likely to be in poverty in Cook County, Illinois is White, with 7.31% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 2.09%. Among those working part-time, it was 15.36%, and for those that did not work, the poverty rate was 24.38%.

Cook County, Illinois Poverty

rate

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Rate
Poverty
Less Than 9th Grade22.67%
High School15.74%
Some College11.94%
Bachelors or Greater5.26%

Cook County, Illinois Poverty Rate by Education

rate

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Rate
Poverty
Female Unemployed33.28%
Male Unemployed26.33%
Female Employed6.28%
Male Employed4.46%

Cook County, Illinois Poverty Rate by Employment Status and Sex

Cook County, Illinois Income by Household Type

Households

Families

MarriedFamilies

NonFamilies

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Name
Median
Mean
Households$78,304$113,411
Families$97,520$137,033
Married Families$124,127$167,226
Non Families$52,894$76,211

mean

median

Income by Household Type

Cook County, Illinois Marital Status

Married

Widowed

Divorced

Separated

NeverMarried

Marriage Rates

42.2%

Overall Marriage Rate

44.4%

Male Marriage Rate

40.0%

Female Marriage Rate

Cook County, Illinois Married by Age and Sex

male

female

Cook County, Illinois Marriage

The age group where males are most likely to be married is Over 65, while the female age group most likely to be married is 45-54.

Cook County, Illinois Marital Status by Race

Married

Widowed

Divorced

Separated

NeverMarried

Cook County, Illinois Marital Status

Second Gulf War

First Gulf War

Vietnam

Korea

World War II

142,022

Number of Veterans

129,552

Male Veterans

12,470

Female Veterans

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War
Veterans
Vietnam48,848
Second Gulf War27,882
First Gulf War23,781
Korea10,299
World War II4,098

Cook County, Illinois Veterans by War

count

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Age Group
Veterans
75+41,728
65 to 7435,422
35 to 5430,224
55 to 6423,255
18 to 3411,393

Cook County, Illinois Veterans by Age

count

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Name
Veterans
% of Total
White79,8523.78%
Black44,5384.85%
Hispanic16,2621.69%
2+ Races7,6492.43%
Other Race5,4341.36%
Asian3,9161.18%
Native American5732.42%
Islander602.92%

Cook County, Illinois Veterans by Race

Cook County, Illinois Veterans by Education

Less Than 9th Grade

High School Graduate

Some College

Bachelors or Greater

8.25%

Veteran Poverty Rate

29.21%

Veteran Disability Rate

Cook County, Illinois Veterans by Education

LaborForceParticipation

66.2%

Labor Force Participation

61.5%

Employment Rate

7.1%

Unemployment Rate

Cook County, Illinois Employment by Age

LaborForceParticipation

Cook County, Illinois Employment by Race

LaborForceParticipation

Cook County, Illinois Employment by Education

Origin of Non-Citizens

Europe

Asia

Africa

Oceania

Latin America

North America

Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.

Origin of Naturalized Citizens

Europe

Asia

Africa

Oceania

Latin America

North America

61.59%

Born in Cook County, Illinois

78.99%

Native Born

21.01%

Foreign Born

9.84%

Non Citizen

11.17%

Naturalized

Place of Birth

78.99% of Cook County, Illinois residents were born in the United States, with 61.59% having been born in Illinois. 9.84% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.

Cook County, Illinois Place of Birth

Sources