La Grange Park is a city located in Cook County Illinois. With a 2020 population of 12,984, it is the 187th largest city in Illinois and the 2566th largest city in the United States . La Grange Park is currently declining at a rate of -0.74% annually and its population has decreased by -4.38% since the most recent census, which recorded a population of 13,579 in 2010. La Grange Park reached it's highest population of 15,459 in 1970. Spanning over 2 miles, La Grange Park has a population density of 5,824 people per square mile.
The average household income in La Grange Park is $129,386 with a poverty rate of 4.63%. The median rental costs in recent years comes to $1,172 per month, and the median house value is $361,500. The median age in La Grange Park is 40.6 years, 40.8 years for males, and 40.5 years for females.