- Landisville
- Laureldale
- Lone Cedar Island
- Long Cedar Island
- Linwood
- Lebanon Lake Estates
- Leektown
- Lewistown
- Lippincotts Corner
- Lower Bank
- Lower Forge
- Lower Mill
- Lakeland
- Lambs Terrace
- Locust Grove
- Locustwood
- Louden
- Lucaston
- Leonards
- Lincoln
- Leamings Mill
- Lores Island
- Lores Mill
- Loyds Corner
- Lummistown
- Llewellyn Park
- Lansdowne
- Larisons Corners
- Laurel Farms
- Linvale