| Code | Name | Region |
|---|---|---|
| USTRC | Tracy | CA |
| USTY2 | Tracy | MN |
| USTR3 | Tracys Landing | MD |
| USTFG | Trafalgar | IN |
| US7TR | Trafford | AL |
| USTFF | Trafford | PA |
| USTRA | Trainer | PA |
| USTFR | Transfer | PA |
| USTZ4 | Trappe | MD |
| USTP4 | Trappe | PA |
| USQ5V | Toquerville | UT |
| USQTN | Tornillo | TX |
| US3TT | Toronto | KS |
| USTOD | Toronto | OH |
| USTOA | Torrance | CA |
| USQRR | Torreon | NM |
| USTR2 | Torrey | UT |
| USTGT | Torrington | CT |
| USTOR | Torrington | WY |
| USTOT | Totowa | NJ |
| USTTV | Tottenville, Staten Island | NY |
| USTH8 | Touchet | WA |
| USZTU | Toughkenamon | PA |
| USTU9 | Toulon | IL |
| UST5W | Tow | TX |
| USTWJ | Towaco | NJ |
| USTWK | Towanda | KS |
| USTOW | Towanda | PA |
| USTW8 | Tower | MN |
| USTWC | Tower City | PA |
| USTN3 | Tonganoxie | KS |
| USQTO | Tonica | IL |
| USTOK | Tonkawa | OK |
| USTOH | Tonopah | AZ |
| USTPH | Tonopah | NV |
| USTW7 | Tontitown | AR |
| USTY5 | Tony | WI |
| USTOO | Tooele | UT |
| USTO2 | Toomsboro | GA |
| USTGP | Topanga | CA |
| USTQK | Topeka | IL |
| USTPK | Topeka | IN |
| USTOP | Topeka | KS |
| USTPP | Toppenish | WA |
| USV27 | Topping | VA |
| USTF3 | Topsfield | MA |
| UST8F | Topsfield | ME |
| USTSH | Topsham | ME |
| USVOH | Topsham | VT |
| USXNF | Topton | PA |