St. Marys is a city in Auglaize County, Ohio, home to about 8,301 people across 4.7 square miles. Its ZIP code is 45885.
Homes sold for a median of $151 per square foot in the three months ending August 2026, a seller’s market.
Each card is that ZIP code’s whole market, including any part outside St. Marys. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up St. Marys’s story and what everyday life there is like, for people thinking about moving in.
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| Nearest major airport | John Glenn Columbus International Airport (CMH)88 miles away |
|---|---|
| Closer regional airport | James M. Cox Dayton International Airport (DAY)45 miles away |
| Nearest city of 250,000+ | Fort Wayne, IN54 miles away |
| Nearest city of 1 million+ | Chicago, IL193 miles away |
Straight-line distances from the center of St. Marys; driving is longer.
Source: Airports from OurAirports (scheduled passenger service); city centers and populations from the U.S. Census Bureau.
Source: Members of Congress from the congress-legislators project; districts from the Census Bureau’s relationship files; governor and mayor from Wikidata.
St. Marys had 8,397 residents in the 2020 census, up 1% since 2000.
It’s the 216th largest of 1,264 towns in Ohio by population.
Auglaize County grew from 31,192 residents in 1900 to 46,422 in 2020.
Auglaize County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 84°F in summer, and winter lows average 19°F. About 40.1 inches of rain and melted snow fall in a typical year, with about 29 inches of snow.
Source: NOAA 1991–2020 climate normals, Celina 3 Ne, OH weather station (8 miles away).
23,217 jobs at 992 businesses in Auglaize County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
78 doctors and other health care providers list an office in St. Marys.
Nearest hospitals
Providers with an office here
| Primary care doctors | 10 |
|---|---|
| Specialist doctors | 15 |
| Dentists | 3 |
| Nurse practitioners and physician assistants | 16 |
| Mental health providers | 15 |
| Physical and occupational therapists | 10 |
| Optometrists | 2 |
| Chiropractors | 7 |
| Pharmacies | 3 |
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances; providers from the CMS National Plan and Provider Enumeration System (NPPES), by practice address and primary specialty.
Parks (13 nearby)
Grocery stores (3 nearby)
Libraries (1 nearby)
Museums (1 nearby)
Theaters and performance venues (1 nearby)
Counts are within about 1.5 miles of the center of town.
Source: Map data © OpenStreetMap contributors (openstreetmap.org/copyright), as mapped by volunteers; it can miss places or include closed ones.
Established in 1834.
Notable people born here
Source: Wikidata (wikidata.org), the free knowledge base; people are listed by place of birth.
Public schools here are run by St Marys City. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| St. Marys East Primary SchoolSaint Marys | K–2 | 445 | Public | 0.9 mi |
| St Marys West Intermediate SchoolSaint Marys | 3–5 | 425 | Public | 0.5 mi |
| St. Marys Middle SchoolSaint Marys | 6–8 | 445 | Public | 1.5 mi |
| St Marys Memorial High SchoolSaint Marys | 9–12 | 669 | Public | 1.5 mi |
| School | Grades | Students | Affiliation | Distance |
|---|---|---|---|---|
| Holy Rosary Elementary SchoolSaint Marys | Pre-K–8 | 115 | Roman Catholic | 0.6 mi |
Source: U.S. Department of Education, NCES: Common Core of Data (2024-2025) for public schools; Private School Universe Survey (2023-2024) for private schools. Listed by address; we don’t rate schools.
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Town boundaries don’t always match ZIP codes: a ZIP code can cross into neighboring towns, and a town can share a ZIP code with its neighbors. Facts describe the town itself; market figures describe whole ZIP codes.