| Caribou County, ID (County) |
| Carimona, MN (Township) |
| Carl, GA (Town) |
| Carl, SD (Township) |
| Carl Junction, MO (City) |
| Carl Township, IA (Township) |
| Carl's Corner, TX (Town) |
| Carleton, NE (Village) |
| Carleton, MI (Village) |
| Carlin, NV (City) |
| Carlinville, IL (City) |
| Carlinville Township, IL (Township) |
| Carlisle, NY (Town) |
| Carlisle, IA (City) |
| Carlisle, MN (Township) |
