La Grange is a city located in Cook County Illinois. With a 2020 population of 15,136, it is the 161st largest city in Illinois and the 2299th largest city in the United States . La Grange is currently declining at a rate of -0.61% annually and its population has decreased by -2.66% since the most recent census, which recorded a population of 15,550 in 2010. La Grange reached it's highest population of 17,814 in 1970. Spanning over 3 miles, La Grange has a population density of 5,995 people per square mile.
The average household income in La Grange is $167,550 with a poverty rate of 2.97%. The median rental costs in recent years comes to $1,183 per month, and the median house value is $501,700. The median age in La Grange is 41.7 years, 39.7 years for males, and 43 years for females.