| Trenton Township, OH (Township) |
| Trenton Township, IA (Township) |
| Treutlen County, GA (County) |
| Trevesta Community Development District, FL (CDD) |
| Treynor, IA (City) |
| Trezevant, TN (Town) |
| Tri, ND (Township) |
| Triadelphia, WV (Town) |
| Triana, AL (Town) |
| Triangle, NY (Town) |
| Tribbey, OK (Town) |
| Tribune, KS (City) |
| Trier, ND (Township) |
| Trigg County, KY (County) |
| Trimbelle Town, WI (Town) |
