St. Marys is a city in Elk County, Pennsylvania, home to about 12,529 people across 99 square miles. Its ZIP code is 15857.
Homes sold for a median of $161 per square foot in the three months ending August 2026, a buyer’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.
Are you a local agent who knows St. Marys well? Agents who advertise here will be able to write the guide. Advertise on OfferBacked
| Nearest major airport | Pittsburgh International Airport (PIT)109 miles away |
|---|---|
| Closer regional airport | DuBois Regional Airport (DUJ)25 miles away |
| Nearest city of 250,000+ | Pittsburgh, PA101 miles away |
| Nearest city of 1 million+ | Philadelphia, PA204 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 12,738 residents in the 2020 census, down 12% since 2000.
It’s the 201st largest of 2,568 towns in Pennsylvania by population.
Elk County grew from 32,903 residents in 1900 to 30,990 in 2020.
Elk County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 79°F in summer, and winter lows average 13°F. About 46.7 inches of rain and melted snow fall in a typical year, with about 66 inches of snow.
Source: NOAA 1991–2020 climate normals, Glen Hazel 2 Ne Dam, PA weather station (9 miles away).
12,841 jobs at 898 businesses in Elk County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
132 doctors and other health care providers list an office in St. Marys.
Nearest hospitals
Providers with an office here
| Primary care doctors | 12 |
|---|---|
| Specialist doctors | 22 |
| Dentists | 3 |
| Nurse practitioners and physician assistants | 38 |
| Mental health providers | 18 |
| Physical and occupational therapists | 28 |
| Optometrists | 5 |
| Chiropractors | 6 |
| Pharmacies | 8 |
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 (11 nearby)
Grocery stores (4 nearby)
Libraries (2 nearby)
Theaters and performance venues (1 nearby)
Counts are within about 6.5 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 1804.
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 Saint Marys Area SD. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| South St Marys Street El SchSaint Marys | Pre-K–5 | 583 | Public | 0.7 mi |
| St Marys Area MSSaint Marys | 6–8 | 459 | Public | 1.9 mi |
| St Marys Area SHSSaint Marys | 9–12 | 572 | Public | 1.8 mi |
| School | Grades | Students | Affiliation | Distance |
|---|---|---|---|---|
| St Marys Catholic ElementarySaint Marys | Pre-K–5 | 245 | Roman Catholic | 0.6 mi |
| St Marys Catholic Elementary SchoolSaint Marys | Pre-K–5 | 246 | Roman Catholic | 0.6 mi |
| St Marys Catholic Middle SchoolSaint Marys | 6–12 | 275 | Roman Catholic | 1.1 mi |
| Elk County Catholic High SchoolSaint Marys | 9–12 | 179 | Roman Catholic | 1.1 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.
Buying or selling around St. Marys? Tell us what you need and when. No agents advertise here yet, so we’ll keep your request for up to 30 days and send it to local agents who join. No obligation, and you choose who to work with.
Loading map…
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.