| Code | Name | Region |
|---|---|---|
| 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 |
| 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 |