Blaine is a township in Washington County, Pennsylvania, home to about 535 people across 12 square miles. Its ZIP code is 15365, and parts of 15312 and 15323 are in Blaine too.
Homes sold for a median of $130 per square foot across 2 ZIP codes in the three months ending August 2026, and 1 of 2 were seller’s markets.
All in Blaine
Mostly Cross Creek; part is in Blaine
Mostly Buffalo Township (Washington County); part is in Blaine
Each card is that ZIP code’s whole market, including any part outside Blaine. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
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| Nearest major airport | Pittsburgh International Airport (PIT)22 miles away |
|---|---|
| Nearest city of 250,000+ | Pittsburgh, PA29 miles away |
| Nearest city of 1 million+ | Philadelphia, PA280 miles away |
Straight-line distances from the center of Blaine; 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.
Blaine had 617 residents in the 2020 census, up 3% since 2000.
It’s the 2125th largest of 2,568 towns in Pennsylvania by population.
Washington County grew from 92,181 residents in 1900 to 209,349 in 2020.
Washington 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 37.6 inches of rain and melted snow fall in a typical year.
Source: NOAA 1991–2020 climate normals, Wheeling Ohio Co Ap, WV weather station (11 miles away).
84,410 jobs at 5,340 businesses in Washington County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
Nearest hospitals
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances.
Libraries
Counts are within about 2.5 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.
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Shares ZIP codes with Cross Creek, Buffalo Township (Washington County), Independence Township (Washington County), East Finley, Donegal Township (Washington County), Claysville, Hopewell Township (Washington County), Jefferson Township (Washington County) and West Finley.
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.