McDonough County, Illinois

McDonough County
McDonough County Courthouse, 2006
Flag of McDonough County
Map of Illinois highlighting McDonough County
Location within the U.S. state of Illinois
Map of the United States highlighting Illinois
Illinois's location within the U.S.
Coordinates: 40°28′N 90°41′W / 40.46°N 90.68°W / 40.46; -90.68
Country United States
State Illinois
FoundedJanuary 25, 1826
Named forThomas Macdonough
SeatMacomb
Largest cityMacomb
Area
 • Total590 sq mi (1,500 km2)
 • Land589 sq mi (1,530 km2)
 • Water0.8 sq mi (2 km2)  0.1%
Population
 (2020)
 • Total27,238
 • Density46/sq mi (18/km2)
Time zoneUTC−6 (Central)
 • Summer (DST)UTC−5 (CDT)
Congressional districts15th, 17th
Websitemcg.mcdonough.il.us

McDonough County is a county in the U.S. state of Illinois. According to the 2020 census, it had a population of 27,238.[1] Its county seat is Macomb,[2] which is also the home of Western Illinois University.

McDonough County is part of the Macomb, IL Micropolitan Statistical Area.

  1. ^ "McDonough County, Illinois". United States Census Bureau. Retrieved June 10, 2023.
  2. ^ "Find a County". National Association of Counties. Archived from the original on May 31, 2011. Retrieved June 7, 2011.