- California Bar
- Calkins
- Callahan
- Camas Valley
- Camel Rock
- Camp Elkanah
- Camp Sherman
- Canaan
- Canary
- Canemah
- Cannery Island
- Capitol Hill
- Carnahan
- Carnation
- Carpenters Island
- Carpenterville
- Carson
- Carus
- Carver
- Cascade Gorge
- Cascadia
- Castle Rock
- Castle Rock
- Cat and Kittens Rock
- Cave Rock
- Cayuse
- Cecil
- Cedar Flat
- Cedar Island
- Cedar Point