- Oakwood
- Oakwood
- Oakwood
- Oakwood
- Oakwood Estates
- Oakwood Park
- Oasis Trailer Park
- Oatbed Island
- Oatland
- Oats
- Ocean Drive Beach
- Ocean Forest
- Ocean Lakes
- Ocean Pines
- Oceanmarsh Subdivision
- Oceanside Village
- Oceanview
- Oceda
- Oconee Estates
- Oconee Point
- Ogden
- Okatie
- Old Buckhead
- Old Combahee Island
- Old Cordesville
- Old Court
- Old Fort Estates
- Old Forty Acre Island
- Old House
- Old Island