- Laona
- Levant
- Lily Dale
- Lombard
- Long View
- Longview
- Loomises
- Lakeville
- Lathams Corners
- Lincklaen
- Lincklaen Center
- Lower Genegantslet Corner
- Laphams Mills
- LTS Mobile Home Park
- Lebanon Springs
- Linlithgo
- Linlithgo Mills
- Lapeer
- Little York
- Loring Crossing
- Lower Cincinnatus
- Lake Delaware
- Lakins Island
- Leisure Village Mobile Home Park
- Leonta
- Long Flat
- Loomis
- Luzerne
- Lafayetteville
- Lakeside Grove Mobile Home Park