Addison Borough is a borough in Somerset County, Pennsylvania, home to about 233 people across 0.5 square miles. It has no ZIP code of its own: it’s part of 15411.
Homes sold for a median of $245 per square foot in the three months ending August 2026, a buyer’s market.
Mostly Addison Township; part is in Addison Borough
Each card is that ZIP code’s whole market, including any part outside Addison Borough. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Addison Borough’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)70 miles away |
|---|---|
| Closer regional airport | Morgantown Municipal Airport Walter L. (Bill) Hart Field (MGW)31 miles away |
| Nearest city of 250,000+ | Pittsburgh, PA58 miles away |
| Nearest city of 1 million+ | Philadelphia, PA224 miles away |
Straight-line distances from the center of Addison 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.
Addison Borough had 166 residents in the 2020 census, down 22% since 2000.
It’s the 2417th largest of 2,568 towns in Pennsylvania by population.
Somerset County grew from 49,461 residents in 1900 to 74,129 in 2020.
Somerset 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 19°F. About 47.2 inches of rain and melted snow fall in a typical year, with about 61 inches of snow.
Source: NOAA 1991–2020 climate normals, Confluence 1 Sw Dam, PA weather station (4 miles away).
18,678 jobs at 1,647 businesses in Somerset 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.
Grocery stores
Pharmacies
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.
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Shares ZIP codes with Addison Township.
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.