- Lagrange
- Lake Arrowhead
- Lake View
- Leeds
- Limerick
- Livermore
- Lebanon
- Lee
- Liberty
- Lincoln
- Littleton
- Lowell
- Ludlow
- Levant
- Lewiston
- Limestone
- Limington
- Lincolnville
- Linneus
- Lisbon
- Lisbon Falls
- Livermore Falls
- Long Island
- Lovell
- Lubec
- Long Porcupine Island
- Long Island
- Long Island
- La Croix Depot
- La Grande Island