- Cable
- Cadott
- Cainville
- Calamine
- Caldwell
- Caledonia
- Calhoun
- Callon
- Calumet Harbor
- Calumetville
- Calvary
- Calvert
- Cambria
- Cambridge
- Camelot Terrace
- Cameron
- Camino Mobile Home Park
- Camp Douglas
- Camp Lake
- Camp Whitcomb
- Campbellsport
- Campia
- Cana Island
- Canton
- Carcajou
- Cardinal Crest
- Carefree Estates
- Carlson Island
- Carlsville
- Carmel