Pennsylvania County Maps

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Allegheny County, Pennsylvania

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Allegheny County, Pennsylvania Map

A detailed map of Allegheny County. Click on a nearby County to view more information about that County.

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Map of Townships in Allegheny County, Pennsylvania

An interactive map of county subdivisions in Allegheny County. In Pennsylvania, that can include Townships, Boroughs, Towns, and Municipalities. Find what township you are in now.

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Map of Counties in Pennsylvania

An interactive map of Counties in Pennsylvania. Click on a County to view more information about that County.

About Allegheny County, Pennsylvania

Allegheny County is a large urban county in Pennsylvania, United States. As of the 2025 census estimate, the population was 1,225,035, a 2% decrease of 25,543 residents since 2020, making it the state's second-most populous county, after Philadelphia County. Its county seat and largest city is Pittsburgh, Pennsylvania's second largest city. The county is part of the Greater Pittsburgh region of the commonwealth, and is the center of the Pittsburgh media market.

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This site has an interactive map of Pennsylvania Counties. Click on the map to find your Pennsylvania county, and view more details. You can also search for your address and use your GPS to find your Pennsylvania County.

Find what County you are in, and see official Pennsylvania County resources and information. Find any county in the United States, along with resources and links to official County websites. See a County map and local details. Looking for what county you are currently in? Find out on this map or use your device GPS to see what county you are in.

Snow Totals in Allegheny County, Pennsylvania

See recent snowfall, snow depth, and records for each city and town in Allegheny County, Pennsylvania.