| Clarkson, NY (Town) |
| Clarkson, KY (City) |
| Clarkson, NE (City) |
| Clarkson Valley, MO (City) |
| Clarkston, GA (City) |
| Clarkston, WA (City) |
| Clarkston, UT (Town) |
| Clarkston, MI (City) |
| Clarkstown, NY (Town) |
| Clarksville, IA (City) |
| Clarksville, NY (Town) |
| Clarksville, TX (City) |
| Clarksville, IN (Town) |
| Clarksville, NE (Township) |
| Clarksville, NH (Town) |
