| Port Code | Port Name | Country |
| USTSL | Ten Sleep | United States |
| USTSM | Taos | United States |
| USTSP | Tehachapi | United States |
| USTSU | Treasure Island/Los Angeles | United States |
| USTSZ | Bronston | United States |
| USTTA | Latta | United States |
| USTTD | Troutdale | United States |
| USTTE | Tate | United States |
| USTTL | Whitehall | United States |
| USTTM | Tarentum | United States |
| USTTN | Trenton | United States |
| USTTO | Britton | United States |
| USTTR | Metter | United States |
| USTTW | Tullytown | United States |
| USTTX | Teutopolis | United States |
| USTTY | Troy | United States |
| USTUC | Tucker | United States |
| USTUD | Stuarts Draft | United States |
| USTUG | Sturgis | United States |
| USTUK | Tukwila | United States |
| USTUL | Tulsa | United States |
| USTUM | Timonium | United States |
| USTUN | Tustin | United States |
| USTUP | Tupelo | United States |
| USTUQ | Turkey | United States |
| USTUR | Turner | United States |
| USTUS | Tucson | United States |
| USTUT | Tutwiler | United States |
| USTUW | Tumwater | United States |
| USTVC | Traverse City | United States |
| USTVE | Thomasville | United States |
| USTVF | Thief River Falls | United States |
| USTVI | Thomasville | United States |
| USTVL | South Lake Tahoe | United States |
| USTVO | Trevor | United States |
| USTVR | Trevorton | United States |
| USTVS | Trevose | United States |
| USTVY | Traver | United States |
| USTWA | Twin Hills | United States |
| USTWB | Townsend | United States |
| USTWC | Tower City | United States |
| USTWD | Pt Townsend | United States |
| USTWE | Taylor | United States |
| USTWF | Twin Falls | United States |
| USTWI | Twisp | United States |
| USTWJ | Towaco | United States |
| USTWL | Tualatin | United States |
| USTWM | Stewart, McLeod | United States |
| USTWQ | Winton | United States |
| USTWR | Two Rivers | United States |
| USTWS | Towson | United States |
| USTWT | Stewart | United States |
| USTWY | Tawas City | United States |
| USTXA | Texas | United States |
| USTXC | McAllen | United States |
| USTXD | Tuxedo | United States |
| USTXG | Gladewater | United States |
| USTXH | Haslet | United States |
| USTXK | Texarkana | United States |
| USTXN | Thomson | United States |
| USTXP | Troup | United States |
| USTXR | Berkeley | United States |
| USTXS | Tolar | United States |
| USTXT | Texas City | United States |
| USTXV | Toano | United States |
| USTYA | Ty Ty | United States |
| USTYE | Tyonek | United States |
| USTYH | Troy | United States |
| USTYI | Troy | United States |
| USTYJ | Tyro | United States |
| USTYL | Tyler | United States |
| USTYM | Troy | United States |
| USTYN | Taylorsville | United States |
| USTYP | Taylor | United States |
| USTYQ | Taylors | United States |
| USTYR | Tyler | United States |
| USTYS | Knoxville | United States |
| USTYT | Taylor | United States |
| USTYU | Troy | United States |
| USTYV | Taylorsville | United States |
| USTYX | Troy | United States |
| USTYY | East Troy | United States |
| USTYZ | Taylor | United States |
| USTZR | Tarzana | United States |
| USTZW | Tazewell | United States |
| USTZZ | Tecumseh | United States |
| USUAA | Unalaska | United States |
| USUAB | Abbeville | United States |
| USUAC | Bristol | United States |
| USUAD | Albemarle | United States |
| USUAE | Aberdeen | United States |
| USUAF | Abernathy | United States |
| USUAG | Ackerman | United States |
| USUAH | Acton | United States |
| USUAI | Cleveland | United States |
| USUAK | Carlstadt | United States |
| USUAM | Adamsville | United States |
| USUAN | Adams | United States |
| USUAO | Adrian | United States |
| USUAP | Addison | United States |