St. Marys city, Ohio
Official LSAD Designation: St. Marys city • Census GEOID: 3969680
• Auglaize County
St. Marys city is an incorporated city in Auglaize County, Ohio. According to official records from the Census (2025), St. Marys city had an estimated population of 8,398 residents. Official Census Bureau geographic records classify this community under LSAD designation St. Marys city (GEOID 3969680).
Local Government Administration U.S. Census Bureau GMAF
City Of St Marys
Municipal
Official Title:
Mayor
Address:
101 E SPRING ST, SAINT MARYS OH 45885-2395
County Of Auglaize
County
Official Title:
Commissioner
Address:
209 S BLACKHOOF ST, STE 201, WAPAKONETA OH 45895-1989
Civic & Statistical Snapshot
| Category | Estimate | Survey Period / Source |
|---|---|---|
| Total Population | 8,398 | 2025 |
| Median Household Income | $79,516 | 2020-2024 |
| Median Home Value | $148,500 | 2020-2024 |
| Land Area | 4.67 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).