
Chicago
- County:
- Cook County
- County Seat:
- Yes
- Area (mi²):
- 225.099
- State:
- Illinois
Chicago is located in Cook County, Illinois. Chicago has a 2025 population of 2,648,036. It is also the county seat of Cook County. Chicago is currently declining at a rate of -0.31% annually and its population has decreased by -3.47% since the most recent census, which recorded a population of 2,743,329 in 2020.
The average household income in Chicago is $112,443 with a poverty rate of 16.83%. The median age in Chicago is 35.7 years: 35.2 years for males, and 36.2 years for females.