| Clay, MO (Township) |
| Clay, WV (Town) |
| Clay, KS (Township) |
| Clay, KS (Township) |
| Clay, KY (City) |
| Clay, ND (Township) |
| Clay, AL (City) |
| Clay, NY (Town) |
| Clay, MN (Township) |
| Clay Banks Town, WI (Town) |
| Clay Center, OH (Village) |
| Clay Center, NE (City) |
| Clay Center, KS (City) |
| Clay City, IN (Town) |
| Clay City, KY (City) |
