Home>States with Locations>Cities in Pennsylvania Cities and towns in Pennsylvania Largest Cities Allentown Bethlehem Erie Harrisburg Johnstown Lancaster Philadelphia Pittsburgh York All Cities and Towns (Choose First Letter) A B C D E F G H I J K L M N O P Q R S T U V W Y Z Cities and Towns Starting with O Oakdale Oakmont Oaks Oil City Old Forge Oley Olyphant Orangeville Orbisonia Orefield Oreland Orrstown Orwigsburg Osceola Mills Osterburg Oxford