
Oak Park
- County:
- Cook County
- County Seat:
- No
- Area (mi²):
- 4.7
- State:
- Illinois
Oak Park is a village located in Cook County, Illinois. Oak Park has a 2025 population of 50,510. Oak Park is currently declining at a rate of -1.51% annually and its population has decreased by -7.1% since the most recent census, which recorded a population of 54,372 in 2020.
The average household income in Oak Park is $157,707 with a poverty rate of 6.74%. The median age in Oak Park is 40.6 years: 39.5 years for males, and 41.6 years for females.