St. Clair Borough is a borough in Schuylkill County, Pennsylvania, home to about 2,754 people across 1.2 square miles. Its ZIP code is 17970.
Homes sold for a median of $104 per square foot in the three months ending August 2026, a balanced market.
Mostly St. Clair Borough; also East Norwegian and New Castle Township
Each card is that ZIP code’s whole market, including any part outside St. Clair Borough. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up St. Clair Borough’s story and what everyday life there is like, for people thinking about moving in.
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| Nearest major airport | Philadelphia International Airport (PHL)77 miles away |
|---|---|
| Closer regional airport | Lehigh Valley International Airport (ABE)40 miles away |
| Nearest city of 250,000+ | Philadelphia, PA74 miles away |
Straight-line distances from the center of St. Clair Borough; 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. Clair Borough had 2,745 residents in the 2020 census, down 16% since 2000.
It’s the 967th largest of 2,568 towns in Pennsylvania by population.
Schuylkill County grew from 172,927 residents in 1900 to 143,049 in 2020.
Schuylkill County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 80°F in summer, and winter lows average 18°F. About 53.7 inches of rain and melted snow fall in a typical year, with about 48 inches of snow.
Source: NOAA 1991–2020 climate normals, Mahanoy City 2 N, PA weather station (8 miles away).
41,596 jobs at 2,705 businesses in Schuylkill County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
7 doctors and other health care providers list an office in St. Clair Borough.
Nearest hospitals
Providers with an office here
| Specialist doctors | 1 |
|---|---|
| Dentists | 4 |
| Mental health providers | 1 |
| Optometrists | 1 |
| Pharmacies | 1 |
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 (2 nearby)
Grocery stores (1 nearby)
Pharmacies
Libraries
Museums
Theaters and performance venues
Counts are within about 1 mile 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 1831.
Source: Wikidata (wikidata.org), the free knowledge base; people are listed by place of birth.
Public schools here are run by Saint Clair Area SD. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Saint Clair Area El/MSSaint Clair | K–8 | 547 | Public | 0.4 mi |
Source: U.S. Department of Education, NCES: Common Core of Data (2024-2025) for public schools. Listed by address; we don’t rate schools.
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Shares ZIP codes with East Norwegian and New Castle Township.
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.