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Municipalities

Cities in Pennsylvania include Philadelphia, Reading, Lebanon, and Lancaster in the southeast, Pittsburgh in the southwest, and the tri-cities of Allentown, Bethlehem, and Easton in the central east, known as the Lehigh Valley. The northeast includes the former anthracite coal mining cities of Scranton, Wilkes-Barre, Pittston, Nanticoke, and Hazleton. Erie is located in the northwest. State College is located in the central region. Williamsport is in the north-central region with York, Carlisle, and the state capital Harrisburg on the Susquehanna River in the east-central region of the state. Altoona and Johnstown are in the state's west-central region.

The state's three-most populated cities, in order of size, are Philadelphia, Pittsburgh, and Allentown.