Defiance city, Ohio
Official LSAD Designation: Defiance city • Census GEOID: 3921308
• Defiance County
Defiance city is an incorporated city in Defiance County, Ohio. According to official records from the Census (2025), Defiance city had an estimated population of 17,009 residents. Official Census Bureau geographic records classify this community under LSAD designation Defiance city (GEOID 3921308).
Local Government Administration U.S. Census Bureau GMAF
City Of Defiance
Municipal
Official Title:
Mayor
Address:
631 PERRY ST, DEFIANCE OH 43512
County Of Defiance
County
Official Title:
Clerk
Address:
500 COURT ST, STE A, DEFIANCE OH 43512-2171
Civic & Statistical Snapshot
| Category | Estimate | Survey Period / Source |
|---|---|---|
| Total Population | 17,009 | 2025 |
| Median Household Income | $61,439 | 2020-2024 |
| Median Home Value | $139,900 | 2020-2024 |
| Land Area | 12.87 sq mi | Gazetteer (2026) |
| Civic & Public Services | Hospitals, Libraries, Colleges | CMS / IMLS / IPEDS |
| Schools & Districts | NCES Directory Listings | Provided by k12guides.com |
| Nearby Airports | Landing Facilities | Provided by airport-data.com |
| Climate & Weather | NOAA 30-Year Normals | 1991–2020 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).