About Us
Community Overview
South Fayette Township, established in 1842, is a fast-growing community in Allegheny County, Pennsylvania, about 17 miles southwest of Pittsburgh and 15 miles from Pittsburgh International Airport.
Residents enjoy the homes, parks, schools and other services and amenities, while businesses appreciate the direct access to roadways such as Interstate 79, Route 50 and the Southern Beltway.
South Fayette takes great pride in being A Community Growing Together. South Fayette's population was 18,358 in the 2020 U.S. Census, a 27.3% increase over a decade. More than a quarter of the population—26.8%— is under age 18. The 2010 Census had counted 14,416 people —an increase of more than 48 percent since 1980.
Total assessed real estate value exceeded $1.8 billion in 2024, including significant increases in commercial property values.
Named in honor of Revolutionary War hero General Lafayette (1757-1834), the 21-square-mile township has a rich heritage and a bright future.
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Awards
South Fayette Township is recipient of numerous township-wide and departmental awards and honors.
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Census QuickFacts
Find U.S. Census data about South Fayette Township, Allegheny County.
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Community Profile
Allegheny County provides municipal facts and figures, including real estate values and millage rates.
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Demographics (PDF)
Review a one-page fact sheet about South Fayette.
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Form of Government
South Fayette Township is classified as a first-class township.
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Government Buildings
The South Fayette Township Municipal Center houses the administrative offices, police station and public meeting chambers.
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History
Learn about the history of South Fayette Township, the Historical Society of South Fayette Township and the 175th anniversary of the township (1842-2017).
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Municipal Services
See a summary of services provided by the township government.
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ZIP Codes & Identity
Learn about ZIP codes and post office names that the U.S. Postal Service uses in South Fayette.