- Oak Hill
- Oakdale Estates
- Orchard Park
- Old Damascus
- Oak Grove
- Oaky
- Oran
- Oakland Park
- Oak Forest Mobile Home Park
- Oak Grove
- Oak Hill
- Oak Hill Farms
- Oakbrook
- Ochlocknee
- Oconee
- Oak Grove
- Oak Point
- Oak Ridge
- Old Mill Chase
- Osceola Village
- Overlook Village
- Odum
- Offerman
- Oglethorpe
- Omega
- Orchard Hill
- Oak Creek
- Oak Dale Manor
- Oak Haven
- Oak Hill