Cook County, Illinois Population 2023

5,299,802

Cook County, Illinois's estimated 2023 population is 5,299,802 with a growth rate of 0.15% 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 5,194,675 and has seen a growth of 2.02% since that time.

Note: data after 2021 is projected based on recent change

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2023 Growth Rate
0.15% (8,087)
County Website
Cook County
County Seat
Chicago
2010 Population
5,194,675
Growth Since 2010
2.02% (105,127)

Cook County, Illinois Population 2023

Population by Race

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White

Black or African American

Other race

Asian

Two or more races

Native American

Native Hawaiian or Pacific Islander

Cook County, Illinois Population by Race

Cook County, Illinois Population Pyramid 2023

Cook County, Illinois Median Age

37.3

Total

36.3

Male

38.3

Female

Cook County, Illinois Adults

There are 4,113,751 adults, (774,279 of whom are seniors) in Cook County, Illinois.

Cook County, Illinois Age Dependency

57.7

Age Dependency Ratio

23.2

Old Age Dependency Ratio

34.5

Child Dependency Ratio

Cook County, Illinois Sex Ratio

Female2,694,92051.18%
Male2,570,47848.82%

Cook County, Illinois Population by Age

Cook County, Illinois Renter vs Owner Occupied by Household Type

3.33

Average Family Size

2.53

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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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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The highest rate of high school graduation is among white people with a rate of 85.68%.

The highest rate of bachelors degrees is among asian people with a rate of 57.05%.

Cook County, Illinois Educational Attainment by Race

All

Male

Female

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$48,705

Average Earnings

$54,648

Average Male

$42,619

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

64.92% of Cook County, Illinois residents speak only English, while 35.08% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 20.59% of the population.

Cook County, Illinois Language

Cook County, Illinois Poverty by Race

rate

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13.48%

Overall Poverty Rate

12.18%

Male Poverty Rate

14.72%

Female Poverty Rate

Poverty in Cook County, Illinois

The race most likely to be in poverty in Cook County, Illinois is Black, with 29.53% below the poverty level.

The race least likely to be in poverty in Cook County, Illinois is White, with 8.54% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 2.15%. Among those working part-time, it was 15.45%, and for those that did not work, the poverty rate was 24.25%.

Cook County, Illinois Poverty

rate

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Cook County, Illinois Poverty Rate by Education

rate

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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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mean

median

Income by Household Type

Cook County, Illinois Marital Status

Married

Widowed

Divorced

Separated

NeverMarried

Marriage Rates

42.2%

Overall Marriage Rate

44.5%

Male Marriage Rate

40.2%

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

148,418

Number of Veterans

136,059

Male Veterans

12,359

Female Veterans

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Cook County, Illinois Veterans by War

count

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Cook County, Illinois Veterans by Age

count

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Cook County, Illinois Veterans by Race

Cook County, Illinois Veterans by Education

Less Than 9th Grade

High School Graduate

Some College

Bachelors or Greater

8.58%

Veteran Poverty Rate

28.86%

Veteran Disability Rate

Cook County, Illinois Veterans by Education

LaborForceParticipation

66.2%

Labor Force Participation

61.3%

Employment Rate

7.3%

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

61.53%

Born in Cook County, Illinois

78.8%

Native Born

20.86%

Foreign Born

9.88%

Non Citizen

10.98%

Naturalized

Place of Birth

78.8% of Cook County, Illinois residents were born in the United States, with 61.53% having been born in Illinois. 9.88% 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