- Calvert
- Camelot Terrace
- Camino Mobile Home Park
- Camp Whitcomb
- Campia
- Cana Island
- Canton
- Carcajou
- Cardinal Crest
- Carefree Estates
- Carlson Island
- Carlsville
- Carmel
- Carnegie
- Carnot
- Carol Beach
- Caroline
- Carrollville
- Carter
- Carter
- Caryville
- Casco Junction
- Casimir
- Cassell
- Castle Rock
- Cat Island
- Cat Island
- Cataract
- Cato
- Cato Falls