- Castle Rock
- Caswell Rock
- Cat Island
- Cataumet
- Cataumet Rock
- Cataumet Station
- Cayenne
- Cedar
- Cedar Bushes
- Cedar Crest
- Cedar Grove
- Cedar Hill
- Cedar Hill Camp
- Cedar Island
- Cedar Island
- Cedar Island
- Cedarville
- Cedarville Landing
- Cedarwood
- Cemetery Island
- Centerville
- Centerville
- Centerville
- Central Square
- Central Village
- Centralville
- Centre Mills
- Chaces Island
- Chadwick Square
- Chaffinville