- Oxford
- Oakwood
- Ocilla
- Oliver
- Omaha
- Oak Grove
- Oak Grove Estates
- Old Cedar Creek
- Ophir
- Orange
- Oconee Heights
- Old Heritage Farm
- Overlook Lake
- Oakland
- Oak Grove
- Oak Grove, Cherokee
- Oakdale
- Oakfield
- Oakland Heights
- Oakman
- Ocee
- Oglesby
- Osierfield
- Oak Forest
- Oak Ridge
- Oak View Homes
- Old South
- Orchard Hills
- Orrs
- Otranto Hills