| Castle Rock, WA (City) |
| Castle Rock, ND (Township) |
| Castle Rock, CO (Town) |
| Castle Rock, WI (Town) |
| Castle Rock, MN (Township) |
| 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) |
| Castleton Township, MI (Township) |
| Castlewood, SD (Township) |
| Castlewood, SD (City) |
