- Ollie
- Orchard
- Ostrica
- Oakland
- Oak Park Mobile Homes Court
- Oasis
- Osburn
- Oxbow
- Old River Island
- Oak Grove
- Oakland
- Oakland, Bienville
- Oakville
- Oretta
- Oscar
- Otis
- Oxford
- Oak Grove
- Oak Ridge Park
- Old Shell Beach
- Oak Alley
- Oneida
- Oubre
- Oaklawn
- Oxford
- Oak Villa Mobile Home Park
- Oaklawn
- Oak Hills Place
- Old Jefferson
- Olla