Cities in Commonwealth of Pennsylvania, United States ( 562 )
- Latrobe, Pennsylvania
- Laureldale
- Lawnton, Pennsylvania
- Lawrence Park
- Lawrence Park
- Lebanon, Pennsylvania
- Lehighton
- Leith-Hatfield
- Lemoyne, Pennsylvania
- Level Green
- Levittown, Pennsylvania
- Lewisburg, Pennsylvania
- Lewistown, Pennsylvania
- Liberty, Allegheny County, Pennsylvania
- Lima, Pennsylvania
- Limerick, Pennsylvania
- Linglestown
- Linwood, Pennsylvania
- Lititz
- Littlestown
- Lock Haven
- Lorane, Pennsylvania
- Lower Allen
- Lower Burrell
- Luzerne, Pennsylvania
- Luzerne, Pennsylvania
- Macungie
- Mahanoy City
- Malvern, Pennsylvania
- Manchester, Pennsylvania
- Manheim, Pennsylvania
- Manor, Pennsylvania
- Mansfield, Pennsylvania
- Maple Glen
- Maple Glen
- Marienville