Flossmoor is a city located in Cook County Illinois. With a 2020 population of 9,029, it is the 231st largest city in Illinois and the 3313th largest city in the United States . Flossmoor is currently declining at a rate of -0.69% annually and its population has decreased by -4.60% since the most recent census, which recorded a population of 9,464 in 2010. Flossmoor reached it's highest population of 9,518 in 2013. Spanning over 4 miles, Flossmoor has a population density of 2,466 people per square mile.
The average household income in Flossmoor is $149,471 with a poverty rate of 12.51%. The median rental costs in recent years comes to $2,021 per month, and the median house value is $239,500. The median age in Flossmoor is 44 years, 42.4 years for males, and 46.7 years for females.