Tiffin city, Ohio
Official LSAD Designation: Tiffin city • Census GEOID: 3976778
• Seneca County
Tiffin city is an incorporated city in Seneca County, Ohio. According to official records from the Census (2025), Tiffin city had an estimated population of 17,803 residents. Official Census Bureau geographic records classify this community under LSAD designation Tiffin city (GEOID 3976778).
Local Government Administration U.S. Census Bureau GMAF
City Of Tiffin
Municipal
Official Title:
Mayor
Address:
51 E MARKET ST, STE 1, TIFFIN OH 44883-2807
County Of Seneca
County
Official Title:
Assistant Administrator
Address:
111 MADISON ST, TIFFIN OH 44883-2824
Civic & Statistical Snapshot
| Category | Estimate | Survey Period / Source |
|---|---|---|
| Total Population | 17,803 | 2025 |
| Median Household Income | $56,198 | 2020-2024 |
| Median Home Value | $142,200 | 2020-2024 |
| Land Area | 7.43 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).