Mattoon is a city located in Coles County Illinois. With a 2020 population of 17,467, it is the 146th largest city in Illinois and the 2073rd largest city in the United States . Mattoon is currently declining at a rate of -0.42% annually and its population has decreased by -5.86% 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 1,694 people per square mile.
The average household income in Mattoon is $52,021 with a poverty rate of 22.18%. The median rental costs in recent years comes to $663 per month, and the median house value is $85,400. The median age in Mattoon is 40.5 years, 40.1 years for males, and 41 years for females.