- Cedarbrook Mobile Home Park
- Central Valley Mobile Home Park
- Charwood Mobile Home Park
- Chautauqua
- Cherokee Bay Park
- Circle H Mobile Home Park
- Circle K Mobile Home Park
- City of Sammamish
- Clyde
- Coal Creek
- College Place Mobile Home Park
- Columbia
- Cougar Hills
- Cowley
- Crestwood Mobile Home Park
- Crossroads
- Crystalaire Mobile Home Park
- Colfax
- College Place
- Colville
- Conconully
- Concrete
- Camelot Mobile Estates
- Carrington Mobile Home Park
- Cedar Glen Mobile Home Park
- Charleston
- Clear Creek Mobile Home Park
- Colby
- Colchester
- Countryside Mobile Home Park