Cities in Commonwealth of Pennsylvania, United States ( 562 )
- Northampton, Pennsylvania
- Northern Cambria
- Northumberland, Pennsylvania
- Northwest Harborcreek
- Norwood, Pennsylvania
- Oakmont
- Ohioville
- Oil City, Pennsylvania
- Old Forge, Pennsylvania
- Oliver, Pennsylvania
- Olyphant, Pennsylvania
- Oreland, Pennsylvania
- Orwigsburg
- Oxford, Pennsylvania
- Palmer Heights
- Palmerton
- Palmyra, Pennsylvania
- Paoli, Pennsylvania
- Park Forest Village
- Parkesburg
- Parkville, Pennsylvania
- Paxtonia
- Pen Argyl
- Penbrook
- Penn Wynne
- Pennsburg
- Pennside
- Perkasie
- Philadelphia
- Philipsburg, Pennsylvania
- Phoenixville
- Pitcairn, Pennsylvania
- Pittsburgh
- Pittston
- Plains, Pennsylvania
- Pleasant Gap, Pennsylvania