- Latimore
- Laketon Heights
- Leak Run
- Leechburg
- Lincoln Park
- Linden Grove
- Linhart
- Logans Ferry Heights
- Longview
- Lovedale
- Laird Crossing
- Lambings
- Laneville
- Lawrenceburg
- Lookabough Corners
- Lillyville
- Lovi
- Lafayetteville
- Langdondale
- Little Jack Corners
- Lovely
- Loysburg Gap
- Lutzville
- Laddsburg
- Laquin
- Leona
- Limehill
- Litchfield
- Long Valley
- Luthers Mills