| Clarion County, PA (County) |
| Clarion Township, PA (Township) |
| Clarion Township, IL (Township) |
| Clarissa, MN (City) |
| Clark, MN (Township) |
| Clark, MN (Township) |
| Clark, PA (Borough) |
| Clark, SD (City) |
| Clark, SD (Township) |
| Clark, SD (Township) |
| Clark, SD (Township) |
| Clark, MO (City) |
| Clark, MO (Township) |
| Clark, IN (Township) |
| Clark, IN (Township) |
