- Cable
- Caledonia
- Caledonia Mobile Home Park
- Calhoun Beach
- Callaway
- Calumet
- Cambria
- Cambridge
- Camel Back Island
- Camelot Park
- Camp Island
- Camp Ripley Junction
- Campbell
- Campers Island
- Canby
- Canisteo
- Cannon City
- Cannon Falls
- Canoe Island
- Cant Hook Island
- Canton
- Canyon
- Capie Rock
- Capstan Rock
- Cardigan Junction
- Caribou
- Carimona
- Carlisle
- Carlos
- Carlson Island