| City Gate Community Development District, FL (CDD) |
| City Point, WI (Town) |
| CityPlace Community Development District, FL (CDD) |
| Civil Bend, SD (Township) |
| Clackamas County, OR (County) |
| Claflin, KS (City) |
| Claiborne County, MS (County) |
| Claiborne County, TN (County) |
| Claiborne Parish, LA (County) |
| Claibourne Township, OH (Township) |
| Claire City, SD (Town) |
| Clairton, PA (City) |
| Clallam County, WA (County) |
| Clam Falls, WI (Town) |
| Clam Lake Township, MI (Township) |
