- Cline
- Country Hills Mobile Home Park
- Country Villa Mobile Estates
- Cozy Nook
- Carlyon Beach
- Chain Hill
- Carlson Landing
- Cooper Island
- Calhounville
- Casey Island
- Chew
- Climax
- Clyde
- Coppei
- Crescent Island
- Calmor Cove Club Mobile Home Park
- Cat Island
- Cedar Crossing
- Cedarville
- Cha-Choo-Sen
- Chuckanut
- Chuckanut Island
- Chuckanut Village
- Clearbrook
- Columbia
- Comar
- Cottonwood Beach
- Cougar Island
- Cresthaven Mobile Home Park
- Cashup