Defiance County, Ohio

Defiance County
Location within the U.S. state of Ohio
Ohio's location within the U.S.
Coordinates: 41°19′N 84°29′W / 41.32°N 84.49°W / 41.32; -84.49
Country United States
State Ohio
FoundedApril 7, 1845
Named afterFort Defiance
SeatDefiance
Largest cityDefiance
Area
  Total
414 sq mi (1,070 km2)
  Land411 sq mi (1,060 km2)
  Water2.7 sq mi (7 km2)  0.7%
Population
 (2020)
  Total
38,286
  Density92/sq mi (36/km2)
Time zoneUTC−5 (Eastern)
  Summer (DST)UTC−4 (EDT)
Congressional district9th
Websitewww.defiance-county.com

Defiance County is a county located in the U.S. state of Ohio. As of the 2020 census, the population was 38,286. Its county seat and largest city is Defiance. The county was named after an early Army fortification, Fort Defiance, which was so named by Mad Anthony Wayne to signify the settlers' "defiance" of the Indians. The Defiance, OH Micropolitan Statistical Area includes all of Defiance County.