South Buffalo is a township in Armstrong County, Pennsylvania, home to about 2,681 people across 27 square miles. Its ZIP code is 16229, and parts of 16055 and 16262 are in South Buffalo too.
Homes sold for a median of $183 per square foot in the three months ending August 2026, a seller’s market.
Mostly South Buffalo; also Freeport and Buffalo Township (Butler County)
Mostly Buffalo Township (Butler County); part is in South Buffalo
Mostly West Franklin; part is in South Buffalo
Each card is that ZIP code’s whole market, including any part outside South Buffalo. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up South Buffalo’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)33 miles away |
|---|---|
| Nearest city of 250,000+ | Pittsburgh, PA24 miles away |
| Nearest city of 1 million+ | Philadelphia, PA244 miles away |
Straight-line distances from the center of South Buffalo; 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.
South Buffalo had 2,709 residents in the 2020 census, down 3% since 2000.
It’s the 994th largest of 2,568 towns in Pennsylvania by population.
Armstrong County grew from 52,551 residents in 1900 to 65,558 in 2020.
Armstrong 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 20°F. About 43.6 inches of rain and melted snow fall in a typical year.
Source: NOAA 1991–2020 climate normals, Schenley Lock 5, PA weather station (2 miles away).
14,258 jobs at 1,288 businesses in Armstrong County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
13 doctors and other health care providers list an office in South Buffalo.
Nearest hospitals
Providers with an office here
| Specialist doctors | 1 |
|---|---|
| Dentists | 3 |
| Mental health providers | 3 |
| Physical and occupational therapists | 1 |
| Optometrists | 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 (3 nearby)
Grocery stores (1 nearby)
Libraries (1 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 Freeport Area SD. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| South Buffalo El SchFreeport | K–5 | 221 | Public | 0.7 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 Buffalo Township (Butler County), Freeport, West Franklin, Clinton Township (Butler County), North Buffalo, Winfield, Worthington, Allegheny Township (Westmoreland County), East Franklin and Cadogan.
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.