Olympia Fields is a city located in Cook County Illinois. With a 2020 population of 4,720, it is the 342nd largest city in Illinois and the 4927th largest city in the United States . Olympia Fields is currently declining at a rate of -0.74% annually and its population has decreased by -5.37% since the most recent census, which recorded a population of 4,988 in 2010. Olympia Fields reached it's highest population of 4,977 in 2013. Spanning over 3 miles, Olympia Fields has a population density of 1,606 people per square mile.
The average household income in Olympia Fields is $118,726 with a poverty rate of 3.26%. The median rental costs in recent years comes to $1,866 per month, and the median house value is $226,500. The median age in Olympia Fields is 48.4 years, 42.8 years for males, and 53.4 years for females.