Cook County's 2026 population is estimated at 5,200,459, reflecting a 0.11% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Cook County is the largest county in Illinois. The 2010 population was 5,198,977 and has grown 0.03% since 2010.
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
