Allegheny County on the map of Pennsylvania 2024. Cities, roads, borders and directions in Allegheny County of Pennsylvania.

Allegheny is the second most populous county in Pennsylvania, with 1.25 million residents. Its county seat is Pittsburgh, and the total area is 730 square miles. This map shows the borders of Allegheny County as well as neighboring counties, including major highways and natural objecsts as of 2024. Zoom in or out of the map using the plus/minus panel. Move the center of this map by dragging it. Also check out the satellite map of Allegheny County.