Baldwin is a borough in Allegheny County, Pennsylvania, home to about 21,057 people across 5.8 square miles. Its ZIP codes are 15227 and 15236, and parts of 15210 are in Baldwin too.
Homes sold for a median of $179 per square foot across 2 ZIP codes in the three months ending August 2026, and 1 of 2 were seller’s markets.
Mostly Baldwin; also Brentwood and Whitehall Borough
Mostly Baldwin; also Whitehall Borough and Pleasant Hills
Mostly Pittsburgh; part is in Baldwin
Each card is that ZIP code’s whole market, including any part outside Baldwin. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Baldwin’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)16 miles away |
|---|---|
| Nearest city of 250,000+ | Pittsburgh, PA5 miles away |
| Nearest city of 1 million+ | Philadelphia, PA257 miles away |
Straight-line distances from the center of Baldwin; 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.
Baldwin had 21,510 residents in the 2020 census, up 8% since 2000.
It’s the 87th 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 22°F. About 41.3 inches of rain and melted snow fall in a typical year.
Source: NOAA 1991–2020 climate normals, Pittsburgh Allegheny Co Ap, 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).
551 doctors and other health care providers list an office in Baldwin’s ZIP codes.
Nearest hospitals
Providers with an office here
| Primary care doctors | 56 |
|---|---|
| Specialist doctors | 48 |
| Dentists | 51 |
| Nurse practitioners and physician assistants | 90 |
| Mental health providers | 188 |
| Physical and occupational therapists | 75 |
| Optometrists | 12 |
| Chiropractors | 31 |
| Pharmacies | 18 |
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 (16 nearby)
Grocery stores (6 nearby)
Pharmacies (4 nearby)
Libraries (5 nearby)
Museums
Theaters and performance venues (3 nearby)
Counts are within about 2 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 1950.
Source: Wikidata (wikidata.org), the free knowledge base; people are listed by place of birth.
Public schools here are run by Baldwin-Whitehall SD, Brentwood Borough SD, West Jefferson Hills SD. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| McAnnulty El SchPittsburgh | Pre-K–K | 354 | Public | 1.5 mi |
| Elroy Avenue El SchPittsburgh | K–5 | 270 | Public | 1.3 mi |
| McClellan El SchPittsburgh | K–2 | 367 | Public | 2.1 mi |
| Moore SchPittsburgh | K–5 | 236 | Public | 0.6 mi |
| Whitehall El SchPittsburgh | 1–2 | 669 | Public | 1.2 mi |
| R.A. Lutz El SchPittsburgh | 3–5 | 1,060 | Public | 1.9 mi |
| Brentwood MSPittsburgh | 6–8 | 269 | Public | 0.9 mi |
| J.E. Harrison MSPittsburgh | 6–7 | 716 | Public | 1.5 mi |
| Pleasant Hills MSPittsburgh | 6–8 | 813 | Public | 2.2 mi |
| Baldwin SHSPittsburgh | 8–12 | 1,657 | Public | 0.4 mi |
| Brentwood SHSPittsburgh | 9–12 | 331 | Public | 0.9 mi |
| School | Grades | Students | Affiliation | Distance |
|---|---|---|---|---|
| Mother of Mercy AcademyPittsburgh | Pre-K–8 | 298 | Roman Catholic | 1.6 mi |
| Mother of Mercy AcademyPittsburgh | Pre-K–8 | 297 | Roman Catholic | 1.6 mi |
| Acld Tillotson SchoolPittsburgh | 3–12 | 78 | Nonsectarian | 0.3 mi |
| New Outlook AcademyPittsburgh | 7–12 | 53 | Nonsectarian | 2.8 mi |
| Grace Non-Traditional Christian AcademyPittsburgh | 9–12 | 407 | Nonsectarian | 1.0 mi |
| Wesley High SchoolPittsburgh | 9–12 | 80 | Nonsectarian | 1.6 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 Pittsburgh, Brentwood, Whitehall Borough, Pleasant Hills, Mount Oliver and South Park.
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.