| Thornton, NH (Town) |
| Thornton, AR (City) |
| Thornton, IA (City) |
| Thornton, IL (Village) |
| Thornton Township, IL (Township) |
| Thorntonville, TX (Town) |
| Thorntown, IN (Town) |
| Thornville, OH (Village) |
| Thorp, WI (City) |
| Thorp, SD (Township) |
| Thorp, WI (Town) |
| Thorpe, MN (Township) |
| Thorsby, AL (Town) |
| Thorson, ND (Township) |
| Thousand Oaks, CA (City) |
