Mattoon is a city located in Illinois. With a 2020 population of 17,427, it is the 148th largest city in Illinois and the 2072nd largest city in the United States. Mattoon is currently declining at a rate of -0.86% annually and its population has decreased by -6.08% since the most recent census, which recorded a population of 18,555 in 2010. Mattoon reached it's highest population of 19,681 in 1970. Spanning over 10 miles, Mattoon has a population density of 1,690 people per square mile.
The average household income in Mattoon is $51,732 with a poverty rate of 21.15%. The median rental costs in recent years comes to $637 per month, and the median house value is $85,300. The median age in Mattoon is 40.2 years, 39.4 years for males, and 41.4 years for females. For every 100 females there are 91.2 males.