Hardin County, Ohio

Hardin County
Location within the U.S. state of Ohio
Ohio's location within the U.S.
Coordinates: 40°40′N 83°40′W / 40.66°N 83.66°W / 40.66; -83.66
Country United States
State Ohio
FoundedMarch 1, 1833
Named afterJohn Hardin
SeatKenton
Largest cityKenton
Area
  Total
471 sq mi (1,220 km2)
  Land470 sq mi (1,200 km2)
  Water0.2 sq mi (0.5 km2)  0.1%
Population
 (2020)
  Total
30,696
  Estimate 
(2024)
30,402
  Density64.7/sq mi (25.0/km2)
Time zoneUTC−5 (Eastern)
  Summer (DST)UTC−4 (EDT)
Congressional district4th
Websitehardincountyohio.gov

Hardin County is a county located in the west central portion of the U.S. state of Ohio. As of the 2020 census, the population was 30,696. Its county seat and largest city is Kenton. The county was created in 1820 and later organized in 1833. It is named for John Hardin, an officer in the American Revolution.