- Ligonier
- Lilly Dale
- Limedale
- Lincoln
- Lincoln City
- Lincoln Hills
- Lincoln Pioneer Village
- Lincoln Village
- Lincolnshire
- Lincolnville
- Linden
- Lindenwood
- Linkville
- Linn Grove
- Linnsburg
- Linton
- Linwood
- Lippe
- Lisbon
- Little Acre
- Little Charlie
- Little Point
- Little Rock
- Little Saint Louis
- Little York
- Littles
- Liverpool
- Livonia
- Lizton
- Loafers Station