- Oaklawn
- Olivet
- Overton
- Old Middleton
- Oak Hill
- Oakview
- Offset
- Okolona
- Orebank
- Osceola Island
- Otes
- Oak Grove
- Oakland
- Ocana
- Old Bethpage
- Oakview
- Owl City
- Oak Grove
- Oak Grove
- Oak Grove
- Oak Haven Acres
- Oak Hill
- Oak Wood Estates
- Oakland
- Old Springville
- Osage
- Oak Grove
- Oakland
- Old Well Crossing
- Oak Grove Village Mobile Home Park