Sewickley Township is a township in Westmoreland County, Pennsylvania, home to about 5,601 people across 27 square miles. Its ZIP codes are 15637, 15640, 15660 and 15678, and parts of 15083, 15089, 15642, 15679 and 15698 are in Sewickley Township too.
Homes sold for a median of $159 per square foot across 3 ZIP codes in the three months ending August 2026, and 0 of 3 were seller’s markets.
All in Sewickley Township
All in Sewickley Township
All in Sewickley Township
All in Sewickley Township
Mostly Sutersville; part is in Sewickley Township
Mostly West Newton; part is in Sewickley Township
Mostly North Huntingdon; part is in Sewickley Township
Mostly South Huntingdon; part is in Sewickley Township
Mostly South Huntingdon; part is in Sewickley Township
Each card is that ZIP code’s whole market, including any part outside Sewickley Township. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Sewickley Township’s story and what everyday life there is like, for people thinking about moving in.
Are you a local agent who knows Sewickley Township well? Agents who advertise here will be able to write the guide. Advertise on OfferBacked
| Nearest major airport | Pittsburgh International Airport (PIT)31 miles away |
|---|---|
| Closer regional airport | Arnold Palmer Regional Airport (LBE)17 miles away |
| Nearest city of 250,000+ | Pittsburgh, PA18 miles away |
| Nearest city of 1 million+ | Philadelphia, PA243 miles away |
Straight-line distances from the center of Sewickley Township; 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.
Sewickley Township had 5,647 residents in the 2020 census, down 9% since 2000.
It’s the 508th largest of 2,568 towns in Pennsylvania by population.
Westmoreland County grew from 160,175 residents in 1900 to 354,663 in 2020.
Westmoreland County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 85°F in summer, and winter lows average 21°F. About 42.4 inches of rain and melted snow fall in a typical year.
Source: NOAA 1991–2020 climate normals, Mckeesport, PA weather station (9 miles away).
124,843 jobs at 8,428 businesses in Westmoreland County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
9 doctors and other health care providers list an office in Sewickley Township’s ZIP codes.
Nearest hospitals
Providers with an office here
| Primary care doctors | 2 |
|---|---|
| Dentists | 1 |
| Nurse practitioners and physician assistants | 1 |
| Physical and occupational therapists | 2 |
| Chiropractors | 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 (9 nearby)
Grocery stores (1 nearby)
Pharmacies (1 nearby)
Libraries (3 nearby)
Museums
Theaters and performance venues
Counts are within about 3.5 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.
Public schools here are run by Yough SD. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| H W Good El SchHerminie | K–4 | 270 | Public | 1.0 mi |
| Yough SHSHerminie | 9–12 | 592 | Public | 0.8 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 North Huntingdon, Penn Township (Westmoreland County), Irwin Borough, Hempfield, West Newton, South Huntingdon, Manor Borough, East Huntingdon, North Irwin, Rostraver, Sutersville and Elizabeth Township (Allegheny County).
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.