
Defiance
- County:
- Defiance County
- County Seat:
- Yes
- Area (mi²):
- 12.786
- State:
- Ohio
Defiance is a city located in Defiance County, Ohio. Defiance has a 2025 population of 17,041. It is also the county seat of Defiance County. Defiance is currently declining at a rate of -0.01% annually and its population has decreased by -0.02% since the most recent census, which recorded a population of 17,045 in 2020.
The average household income in Defiance is $81,922 with a poverty rate of 14.72%. The median age in Defiance is 41.3 years: 39.4 years for males, and 42.8 years for females.