- Oakview Mobile Home Estates
- Oakville
- Oakwood
- Oakwood
- Oakwood
- Oakwood Mobile Home Community
- Oberlin
- Ocqueoc
- Oden
- Oden Island
- Odgers Location
- Ogden
- Ogden Center
- Ogemaw Springs
- Ogontz
- Oil City
- Ojibwa Island
- Ojibway
- Ojibway Island
- Okemos
- Ola
- Old Mill Gardens
- Old Mission
- Old Oak Trails Estates Mobile Home Park
- Old Saugatuck
- Old Squaw Skin Landing
- Old Victoria Historic Townsite
- Oldport
- Olive Center
- Olivers