Mount Prospect is a city located in Cook County, Illinois. With a 2020 population of 53,218, it is the 26th largest city in Illinois and the 746th largest city in the United States. Mount Prospect is currently declining at a rate of -0.91% annually and its population has decreased by -1.75% since the most recent census, which recorded a population of 54,167 in 2010. Mount Prospect reached it's highest population of 56,265 in 2000. Spanning over 11 miles, Mount Prospect has a population density of 4,965 people per square mile.
The average household income in Mount Prospect is $98,076 with a poverty rate of 5.77%. The median rental costs in recent years comes to $1,100 per month, and the median house value is $321,700. The median age in Mount Prospect is 39.6 years, 38.1 years for males, and 41 years for females. For every 100 females there are 101.0 males.