- Little York
- Littleton
- Lively Grove
- Liverpool
- Livingston
- Livingston
- Loami
- Lochanora
- Lockhaven
- Lockport
- Lockport Heights
- Loda
- Lodemia
- Lodge
- Log Cabin Camp
- Logan
- Logan
- Lomax
- Lombard
- Lombardville
- London Mills
- Lone Tree
- Lone Tree Corners
- Lone Tree Subdivision
- Long Branch
- Long Branch
- Long Creek
- Long Grove
- Long Island
- Long Lake