| Clay City Township, IL (Township) |
| Clay County, KS (County) |
| Clay County, MN (County) |
| Clay County, MO (County) |
| Clay County, IA (County) |
| Clay County, IL (County) |
| Clay County, TN (County) |
| Clay County, AR (County) |
| Clay County, KY (County) |
| Clay County, MS (County) |
| Clay County, NC (County) |
| Clay County, WV (County) |
| Clay County, IN (County) |
| Clay County, TX (County) |
| Clay County, AL (County) |
