- Oak Glen
- Oak Glen
- Oak Grove
- Oak Hill
- Oak Hill
- Oak Hill
- Oak Island
- Oak Island Junction
- Oak Ridge
- Oak Ridge
- Oak Ridge Estates
- Oak Shade
- Oak Tree
- Oak Valley
- Oakhurst
- Oakhurst Manor
- Oakland
- Oakland
- Oakland Mills
- Oaklyn
- Oakville
- Oakwood
- Oakwood Beach
- Oakwood Lakes
- Oakwood Park
- Ocean Acres
- Ocean Beach
- Ocean City
- Ocean Gate
- Ocean Grove