Barrios de Wisconsin C
- Caledonia (14)
- Calumet Farms (3)
- Cambridge Heights (12)
- Cannon Park (3)
- Capitol Heights (3)
- Capitol View Heights (1)
- Carpenter-Ridgeway (2)
- Castle Manor (4)
- Central Green Bay (33)
- City of Fond du Lac (48)
- City Park Historic District (2)
- Clarke Square (7)
- Claytown Crest (2)
- Cleveland Park (2)
- Clock Tower Acres (4)
- Colburn (5)
- Cold Spring Park (3)
- Colony Oaks (2)
- Columbus (9)
- Columbus Park (1)
- Concordia (2)