Coles County, Illinois

Coles County
Location within the U.S. state of Illinois
Illinois's location within the U.S.
Coordinates: 39°31′N 88°13′W / 39.51°N 88.22°W / 39.51; -88.22
Country United States
State Illinois
FoundedDecember 25, 1830
Named afterEdward Coles
SeatCharleston
Largest cityCharleston
Area
  Total
510 sq mi (1,300 km2)
  Land508 sq mi (1,320 km2)
  Water1.8 sq mi (5 km2)  0.4%
Population
 (2020)
  Total
46,863
  Estimate 
(2023)
46,060
  Density92/sq mi (35/km2)
Time zoneUTC−6 (Central)
  Summer (DST)UTC−5 (CDT)
Congressional districts12th, 15th
Websitewww.colesco.illinois.gov

Coles County is a county in Illinois. As of the 2020 census, the population was 46,863. Its county seat is Charleston, which is also the home of Eastern Illinois University.

Coles County is part of the Charleston–Mattoon, IL Micropolitan Statistical Area.