- O'Neil Place
- Oak Gardens Estates
- Oak Glen
- Oak Glen
- Oak Grove
- Oak Grove
- Oak Grove
- Oak Grove
- Oak Haven Estates
- Oak Hill
- Oak Hills
- Oak Hills
- Oak Knoll
- Oak Leaf Island
- Oak Park
- Oak Park Estates
- Oak Ridge Mobile Estates
- Oak Run
- Oak Shores
- Oak Valley
- Oak Village
- Oakbar
- Oakridge Ranches
- Oaks
- Oaks Mobile Home And Recreational Vehicle Park
- Oakville
- Oasis
- Oasis
- Oasis Mobile Home Park
- Oasis, Mono