Charleston is a city located in Coles County Illinois. Charleston has a 2020 population of 21,918. It is also the county seat of Coles County. Charleston is currently declining at a rate of -0.39% annually and its population has decreased by -8.37% since the most recent census, which recorded a population of 23,920 in 2010. Charleston reached it's highest population of 23,920 in 2010.
The average household income in Charleston is $67,927 with a poverty rate of 26.52%. The median rental costs in recent years comes to $722 per month, and the median house value is $111,300. The median age in Charleston is 27.6 years, 27.1 years for males, and 28.1 years for females.