Oak Park is a city located in Cook County Illinois. With a 2020 population of 52,797, it is the 27th largest city in Illinois and the 754th largest city in the United States . Oak Park is currently growing at a rate of 0.40% annually and its population has increased by 1.77% since the most recent census, which recorded a population of 51,878 in 2010. Oak Park reached it's highest population of 66,015 in 1940. Spanning over 5 miles, Oak Park has a population density of 11,234 people per square mile.
The average household income in Oak Park is $133,860 with a poverty rate of 7.68%. The median rental costs in recent years comes to $1,175 per month, and the median house value is $387,300. The median age in Oak Park is 39.8 years, 38.5 years for males, and 40.9 years for females.