Plum is a borough in Allegheny County, Pennsylvania, home to about 26,723 people across 29 square miles. Its ZIP code is 15239, and parts of 15068, 15139 and 15147 are in Plum too.
Homes sold for a median of $179 per square foot in the three months ending August 2026, a seller’s market.
Mostly New Kensington; part is in Plum
Mostly Oakmont; part is in Plum
Mostly Penn Hills; part is in Plum
Each card is that ZIP code’s whole market, including any part outside Plum. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Plum’s story and what everyday life there is like, for people thinking about moving in.
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| Nearest major airport | Pittsburgh International Airport (PIT)26 miles away |
|---|---|
| Nearest city of 250,000+ | Pittsburgh, PA14 miles away |
| Nearest city of 1 million+ | Philadelphia, PA245 miles away |
Straight-line distances from the center of Plum; 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.
Plum had 27,144 residents in the 2020 census, up 1% since 2000.
It’s the 61st 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 83°F in summer, and winter lows average 19°F. About 44.7 inches of rain and melted snow fall in a typical year.
Source: NOAA 1991–2020 climate normals, Acmetonia Lock 3, PA weather station (4 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).
70 doctors and other health care providers list an office in Plum.
Nearest hospitals
Providers with an office here
| Primary care doctors | 1 |
|---|---|
| Dentists | 11 |
| Nurse practitioners and physician assistants | 3 |
| Mental health providers | 27 |
| Physical and occupational therapists | 14 |
| Chiropractors | 14 |
| 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 (13 nearby)
Grocery stores (3 nearby)
Pharmacies
Libraries (3 nearby)
Museums (1 nearby)
Theaters and performance venues (1 nearby)
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.
Established in 1788.
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 Plum Borough SD. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| O'Block El SchPittsburgh | K–4 | 512 | Public | 2.5 mi |
| Pivik El SchPlum | K–4 | 740 | Public | 1.7 mi |
| Holiday Park Intermediate SchPittsburgh | 5–6 | 513 | Public | 3.0 mi |
| Plum MSPittsburgh | 7–8 | 550 | Public | 3.1 mi |
| Plum SHSPlum | 9–12 | 1,220 | Public | 1.6 mi |
| School | Grades | Students | Affiliation | Distance |
|---|---|---|---|---|
| Holy Family Catholic SchoolPittsburgh | Pre-K–8 | 178 | Roman Catholic | 2.7 mi |
| Holy Family Catholic SchoolPittsburgh | Pre-K–8 | 178 | Roman Catholic | 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 Penn Hills, New Kensington, Lower Burrell, Oakmont, Arnold, Verona, Upper Burrell and Allegheny Township (Westmoreland 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.