- Leonville
- Leroy
- Leslie
- Leton
- Lettsworth
- Levert
- Lewisburg
- Lewisburg
- Lewisburg, St. Tammany
- Lewiston
- Lewiston
- Lewistown
- Lexington Place
- Liberty
- Liberty Farms
- Liberty Hill
- Liberty Hill
- Libuse
- Lida Grove
- Liddieville
- Lifenite
- Lillie
- Lincecum
- Lincoln Heights
- Lincoln Heights
- Lincoln Park
- Lincoln Park
- Linder Mobile Home Park
- Lindsay
- Linton