Cities in Commonwealth of Pennsylvania, United States ( 562 )
- Morton, Pennsylvania
- Mount Carmel, Pennsylvania
- Mount Joy, Pennsylvania
- Mount Lebanon, Pennsylvania
- Mount Oliver, Pennsylvania
- Mount Penn
- Mount Pleasant, Pennsylvania
- Mount Pleasant, Pennsylvania
- Mount Pocono
- Mountain Top
- Mountain Top
- Mountville, Pennsylvania
- Munhall, Pennsylvania
- Murrysville
- Muse, Pennsylvania
- Myerstown
- Nanticoke, Pennsylvania
- Nanty Glo
- Narberth
- Nazareth, Pennsylvania
- Nesquehoning, Pennsylvania
- New Brighton, Pennsylvania
- New Britain, Pennsylvania
- New Castle, Pennsylvania
- New Cumberland, Pennsylvania
- New Freedom, Pennsylvania
- New Holland, Pennsylvania
- New Hope, Pennsylvania
- New Kensington
- Newtown Grant
- Norristown, Pennsylvania
- North Braddock
- North Catasauqua
- North East, Pennsylvania
- North Versailles
- North Wales, Pennsylvania