- Laurel Ridge
- Laurelton
- Laurens
- Lava
- Laverys Corner
- Lawrence
- Lawrence Park
- Lawrence View Mobile Home Park
- Lawrenceville
- Lawrenceville
- Lawrenceville
- Lawtons
- Lawyersville
- Lazy Acres Mobile Home Park
- Le Petit Senegal
- Le Petite Ciel Mobile Home Park
- Le Roy
- Le Roy Island
- Leatherstocking Mobile Home Park
- Lebanon
- Lebanon
- Lebanon Center
- Lebanon Springs
- Ledgewood Park
- Ledyard
- Lee
- Lee
- Lee Center
- Leeds
- Leedsville