Cook is a township in Westmoreland County, Pennsylvania, home to about 2,412 people across 47 square miles. Its ZIP code is 15677, and parts of 15650, 15658 and 15687 are in Cook too.
Homes sold for a median of $244 per square foot in the three months ending August 2026, a seller’s market.
Mostly Cook; also Ligonier Township
Mostly Unity; part is in Cook
Mostly Ligonier Township; part is in Cook
Mostly Donegal Township (Westmoreland County); part is in Cook
Each card is that ZIP code’s whole market, including any part outside Cook. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Cook’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)53 miles away |
|---|---|
| Closer regional airport | Arnold Palmer Regional Airport (LBE)8 miles away |
| Nearest city of 250,000+ | Pittsburgh, PA40 miles away |
| Nearest city of 1 million+ | Philadelphia, PA220 miles away |
Straight-line distances from the center of Cook; 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.
Cook had 1,896 residents in the 2020 census, down 21% since 2000.
It’s the 1081st largest of 2,568 towns in Pennsylvania by population.
Westmoreland County grew from 160,175 residents in 1900 to 354,663 in 2020.
Westmoreland 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 17°F. About 45.7 inches of rain and melted snow fall in a typical year.
Source: NOAA 1991–2020 climate normals, Rector 3 Ssw, PA weather station (3 miles away).
124,843 jobs at 8,428 businesses in Westmoreland County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
1 doctors and other health care providers list an office in Cook.
Nearest hospitals
Providers with an office here
| Specialist doctors | 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 (3 nearby)
Grocery stores (1 nearby)
Pharmacies
Libraries (1 nearby)
Museums (4 nearby)
Theaters and performance venues (2 nearby)
Counts are within about 4.5 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 Unity, Latrobe, Ligonier Township, Ligonier Borough, Derry Township (Westmoreland County), Mount Pleasant Township (Westmoreland County), Donegal Township (Westmoreland County) and Fairfield 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.