- Lees Mill
- Leesburg
- Leesburg Station
- Leesport
- Leetonia
- Leetsdale
- Lehigh
- Lehigh Furnace
- Lehigh Gap
- Lehighton
- Lehman
- Lehman
- Leibeyville
- Leibharts Corner
- Leidighs
- Leidy
- Leidytown
- Leinbachs
- Leiperville
- Leiphart Mill
- Leisenring
- Leith
- Leith-Hatfield
- Leithsville
- Lemasters
- Lemon
- Lemont
- Lemont Furnace
- Lemoyne
- Lenape