Fayette County, Ohio

Fayette County
Location within the U.S. state of Ohio
Ohio's location within the U.S.
Coordinates: 39°34′N 83°27′W / 39.56°N 83.45°W / 39.56; -83.45
Country United States
State Ohio
FoundedMarch 1, 1810
Named afterMarquis de Lafayette
SeatWashington Court House
Largest cityWashington Court House
Area
  Total
407 sq mi (1,050 km2)
  Land406 sq mi (1,050 km2)
  Water0.7 sq mi (2 km2)  0.2%
Population
 (2020)
  Total
28,951
Time zoneUTC−5 (Eastern)
  Summer (DST)UTC−4 (EDT)
Congressional districts2nd, 15th
Websitewww.fayette-co-oh.com

Fayette County is a county located in the U.S. state of Ohio. As of the 2020 census, the population was 28,951. Its county seat and largest city is Washington Court House. The county was named for the Marquis de Lafayette, a Frenchman who was an officer in the American Army in the Revolution, when established on March 1, 1810. Fayette County comprises the Washington Court House, OH Micropolitan Statistical Area, which is also included in the Columbus-Marion-Zanesville, OH Combined Statistical Area. Recently, on April 2, 2025, it was one of a few counties with minor damage from an EF-1 tornado in southern Ohio. The total costs of the damage have yet to be determined.