Cook County Population

1880–2026

5,507

2026 projection

1.6% since 2020 (decrease)

01K2K3K4K5K6K18801900192019401960198020002020

Source: U.S. Census Bureau decennial counts and annual estimates. 2026 is a projection. Values between recorded years are interpolated.

Use the left and right arrow keys to inspect population observations.

Population by year

Population estimates for Cook County. Annual change is shown as a percentage. Growth is the total change since the preceding observation.
20265,507-150.27%
20255,522-150.27%
20245,537-831.48%
20235,620-981.71%
20225,718+921.64%
20215,626+280.50%
20205,598+1823.36%
20195,416+30.06%
20185,41300.00%
20175,413+671.25%

Showing 10 of 29 years.

Cook County Demographics

53median age

Median age

Female51.7 yrs
Male54 yrs

Adults

4,820
1,757 seniors (65+) · 36% of adults3,063 other adults

Sex

Female 51.2% · 2,887Male 48.8% · 2,748

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101

Race and ethnicity

Tap a square or a group below to highlight it.

Each square is about 1% of residents (roughly 56 people).

Hispanic or Latino residents can be of any race. All other groups exclude Hispanic residents.

U.S. Census Bureau, 2024 ACS 5-year estimates · Table B03002

Cook County Income

$72,638median household income

Median household income

$72,638

Half of households earn more, half earn less

Median earnings

$44,369

Typical yearly pay for a worker 25 or older.

Poverty rate

10.2%

About 1 in 10 residents

U.S. Census Bureau, 2024 ACS 5-year estimates · Tables S1901, S1501, S1701

Cook County Marital Status

55% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married55%57%53%
Never married24%28%21%
Divorced14%12%15%
Widowed7%2%11%
Separated<1%<1%1%

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201