- Oakbrooke
- Oakland and Fairview
- Oakridge Overlook
- Oakridge Pointe
- Old Banks
- Old Homestead
- Olde Forge
- Oak Hill Estates
- Occoneechee Island (historical)
- Omega
- Owens Store
- Oak Hill Corner
- Owens
- Oak Forest
- Old Bandana
- Old Church
- Old Cold Harbor
- Oliver
- Orchard Gardens
- Osborns Store
- Overall
- Oak Grove
- Oak Hill
- Oakland
- Old Cannon Estates
- Old Liberty
- Old Well Crossing
- Oreton
- Osaka
- Oaks Mobile Estates