Cook County's estimated 2026 population is 5,200,459 with a growth rate of 0.11% in the past year according to the most recent United States census data. Cook County is the largest county in Illinois. The 2010 population was 5,198,977 and has seen a growth of 0.03% since that time.
Data after 2023 is projected based on recent change
Overall: 38 years
Female: 39 years
Male: 37 years
There are 4,089,888 adults, (827,156 of whom are seniors) in Cook County.
Female: 2,653,202 (51.2%)
Male: 2,528,888 (48.8%)
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.
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% |
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%.
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 |
Average Income
Median Household Income
Poverty Rate
