- La Porte
- Larimer Hill
- Larwill
- Laud
- Lauer
- Laughery Switch
- Laugheryville
- Laura
- Laurel
- Laveianan Court
- Lawrence
- Lawrenceburg
- Lawrenceburg Junction
- Lawrenceport
- Lawrenceville
- Lawton
- Layton
- Leases Corner
- Leatherwood
- Leatherwood Island
- Leavenworth
- Lebanon
- Lee
- Leesburg
- Leesville
- Legendary Hills
- Leipsic
- Leisure
- Lena
- Lena Park