- Carr
- Castle Rock
- Channel Islands
- Clover Rock
- Concepcion
- Cuyama
- Carnadero
- Castro City
- Champagne Fountain
- Chemeketa Park
- Chinatown (historical)
- Corporal
- Camp Evers
- Chittenden
- Cliftwood Mobile Home Park
- Country Villa Estates Mobile Home Park
- Castle Crag
- Cayton
- Centerville
- Cloverdale
- Conant
- Coram
- Cottonwood Estates
- Cal-Ida
- Campbell Hot Springs
- Carvin Creek Homesites
- Cal-ore Trail Mobile Estates
- Canby Cross
- Cascade Sun Mobile Home Estates
- Chalk Bank Landing