| Code | Name | Region |
|---|---|---|
| USTDX | Toledo | OR |
| USTDO | Toledo | WA |
| USTLD | Tolland | CT |
| USOLQ | Tolleson | AZ |
| USTZL | Tolley | ND |
| USKUO | Tolono | IL |
| USTLU | Toluca | IL |
| USTQL | Toluca Lake | CA |
| USTQB | Tom Bean | TX |
| USQTH | Tomah | WI |
| USTMW | Tomahawk | WI |
| USTOB | Tomball | TX |
| USTBS | Tombstone | AZ |
| USYTO | Tomhicken | PA |
| USTKN | Tomkins Cove | NY |
| USTPM | Tompkinsville | KY |
| USMJX | Toms River | NJ |
| USTKT | Tonasket | WA |
| USUZF | Tonawanda | NY |
| USTN2 | Toney | AL |
| USTIV | Tiverton | RI |
| UST23 | Tivoli | NY |
| USTXV | Toano | VA |
| USTQO | Tobaccoville | NC |
| USTBP | Tobyhanna | PA |
| USTOC | Toccoa | GA |
| US7OD | Todd | NC |
| USTDV | Toddville | NC |
| USTGK | Togiak | AK |
| USGFB | Togiak Fish | AK |
| USTOG | Togiak Village | AK |
| USTKJ | Tok | AK |
| USTKI | Tokeen | AK |
| USKIP | Tokio | TX |
| USOOK | Toksook Bay | AK |
| USTXS | Tolar | TX |
| USTED | Toleda | IA |
| USI9W | Toledo | IA |
| USTQD | Toledo | IL |
| USTOL | Toledo | OH |
| USTGA | Tioga | LA |
| USVEX | Tioga | ND |
| USTIG | Tioga | PA |
| USNS4 | Tioga | TX |
| USTQT | Tionesta | PA |
| USUZE | Tipp City | OH |
| USTPQ | Tippecanoe | IN |
| USTPT | Tipton | CA |
| USTT2 | Tipton | IA |
| USTII | Tipton | IN |