- O'Dell Island
- O J Mathison Mobile Home Park
- Oak Center
- Oak Grove
- Oak Grove Mobile Home Park
- Oak Island
- Oak Island
- Oak Knoll
- Oak Manor Mobile Home Village
- Oak Park
- Oak Park
- Oak Park Heights
- Oak Ridge Trailer Court
- Oak Terrace
- Oak Terrace Estates
- Oak View Mobile Home Park
- Oakbury
- Oakdale
- Oakland
- Oakland Estates Mobile Home Park
- Oakport
- Oakridge
- Oaks Corner
- Oaks Mobile Home Park
- Oakwood Court
- Odessa
- Odin
- Ogema
- Ogilvie
- Okabena