| Castle Hill, ME (Town) |
| Castle Hills, TX (City) |
| Castle Pines, CO (City) |
| Castle Rock, ND (Township) |
| Castle Rock, WA (City) |
| Castle Rock, CO (Town) |
| Castle Rock, MN (Township) |
| Castle Rock Town, WI (Town) |
| Castle Shannon, PA (Borough) |
| Castle Valley, UT (Town) |
| Castleberry, AL (Town) |
| Castleford, ID (City) |
| Castleton, VT (Town) |
| Castleton, KS (Township) |
| Castleton On Hudson, NY (Village) |
