Marion County, Kansas

Marion County
Location within the U.S. state of Kansas
Kansas's location within the U.S.
Coordinates: 38°21′N 97°06′W / 38.350°N 97.100°W / 38.350; -97.100
Country United States
State Kansas
FoundedAugust 30, 1855
Named afterFrancis Marion
SeatMarion
Largest cityHillsboro
Area
  Total
954 sq mi (2,470 km2)
  Land944 sq mi (2,440 km2)
  Water9.4 sq mi (24 km2)  1.0%
Population
 (2020)
  Total
11,823
  Estimate 
(2023)
11,690
  Density12/sq mi (4.8/km2)
Time zoneUTC−6 (Central)
  Summer (DST)UTC−5 (CDT)
Area code620, 785
Congressional district2nd
Websitemarioncoks.net

Marion County is a county located in the U.S. state of Kansas. Its county seat is Marion and its most populous city is Hillsboro. As of the 2020 census, the county population was 11,823. The county was named in honor of Francis Marion, a brigadier general of the American Revolutionary War, known as the "Swamp Fox".