- Oak Grove Estates
- Oakridge
- Oakwood
- Oswald Park
- Oakmont
- Oakway
- Oconee Estates
- Oconee Point
- Old Madison
- Old Pickens
- Oxford
- Oakmont
- Oaks Crossroads
- Old Forty Acre Island
- Oak Creek
- Ole Salem Estates
- Olympia
- Owdoms
- Oak Creek
- Oak Forest
- Oak Hurst
- Oakwood
- Oasis Trailer Park
- Oak Haven Acres
- Oaklawn
- Oak Ridge
- Old Morrisville
- Outland
- Oakdale
- Oakdale Acres