Sewickley Borough is a borough in Allegheny County, Pennsylvania, home to about 3,823 people across 1.0 square miles. It has no ZIP code of its own: it’s part of 15143.
Homes sold for a median of $257 per square foot in the three months ending August 2026, a seller’s market.
Mostly Franklin Park; part is in Sewickley Borough
Each card is that ZIP code’s whole market, including any part outside Sewickley Borough. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Sewickley Borough’s story and what everyday life there is like, for people thinking about moving in.
Are you a local agent who knows Sewickley Borough well? Agents who advertise here will be able to write the guide. Advertise on OfferBacked
| Nearest major airport | Pittsburgh International Airport (PIT)6 miles away |
|---|---|
| Nearest city of 250,000+ | Pittsburgh, PA13 miles away |
| Nearest city of 1 million+ | Philadelphia, PA267 miles away |
Straight-line distances from the center of Sewickley 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.
Sewickley Borough had 3,907 residents in the 2020 census, up 0% since 2000.
It’s the 751st largest of 2,568 towns in Pennsylvania by population.
Allegheny County grew from 775,058 residents in 1900 to 1,250,578 in 2020.
Allegheny 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 21°F. About 38.8 inches of rain and melted snow fall in a typical year, with about 20 inches of snow.
Source: NOAA 1991–2020 climate normals, Glenwillard Dashields L&D, PA weather station (3 miles away).
709,774 jobs at 33,812 businesses in Allegheny County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
411 doctors and other health care providers list an office in Sewickley Borough.
Nearest hospitals
Providers with an office here
| Primary care doctors | 37 |
|---|---|
| Specialist doctors | 85 |
| Dentists | 19 |
| Nurse practitioners and physician assistants | 83 |
| Mental health providers | 110 |
| Physical and occupational therapists | 47 |
| Optometrists | 15 |
| Chiropractors | 15 |
| Pharmacies | 4 |
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.
Grocery stores
Pharmacies
Libraries
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 1808.
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 Quaker Valley SD, North Allegheny SD, Pennsylvania Distance Learning CS. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Edgeworth El SchSewickley | K–5 | 412 | Public | 1.8 mi |
| Franklin El SchSewickley | K–5 | 718 | Public | 3.8 mi |
| Osborne El SchSewickley | K–5 | 397 | Public | 1.9 mi |
| Pennsylvania Distance Learning CSSewickley | K–12 | 1,246 | Charter | 4.8 mi |
| Quaker Valley MSSewickley | 6–8 | 425 | Public | 1.9 mi |
| School | Grades | Students | Affiliation | Distance |
|---|---|---|---|---|
| Noah's Ark Preschool/KindergartenSewickley | Pre-K–K | 18 | Other religious | 1.8 mi |
| Sewickley AcademySewickley | Pre-K–12 | 445 | Nonsectarian | 1.9 mi |
| St James SchoolSewickley | Pre-K–8 | 123 | Roman Catholic | 2.0 mi |
| Watson InstituteSewickley | Pre-K–12 | 215 | Nonsectarian | 2.7 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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Shares ZIP codes with Franklin Park, Ohio, Economy, Aleppo Township (Allegheny County), Edgeworth, Bell Acres, Leet, Sewickley Heights, Sewickley Hills, Glen Osborne, Glenfield and Haysville.
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.