- Leon
- Leonardsburg
- Lerado
- Lesmil
- Lester
- Letart Falls
- Levanna
- Lewis Center
- Lewisburg
- Lewistown
- Lewisville
- Lexington
- Lexington
- Leyda
- Liars Corner
- Libby Aurora Mobile Home Park
- Liberty
- Liberty Center
- Liberty Township
- Lichtys Parcels
- Licking View
- Lickskillet
- Liebs Island
- Liggett Crossing
- Lighthouse Trailer Park
- Lightsville
- Lilly Chapel
- Lima
- Lima
- Limaville