| Port Code | Port Name | Country |
| USHZW | Hazelwood | United States |
| USHZZ | Hawesville | United States |
| USIAA | Indianola | United States |
| USIAD | Dulles Int Apt/Washington | United States |
| USIAG | Niagara Falls | United States |
| USIAL | Midland | United States |
| USIAM | Miamisburg | United States |
| USIAN | Kiana | United States |
| USIAR | Girard | United States |
| USIBA | Itta Bena | United States |
| USIBB | Hibbing | United States |
| USIBE | Iberia | United States |
| USIBF | Brookfield | United States |
| USICE | Spiceland | United States |
| USICH | Nicholls | United States |
| USICL | Clarinda | United States |
| USICS | Chelsea | United States |
| USICT | Wichita | United States |
| USICV | Riceville | United States |
| USICY | Icy Bay | United States |
| USIDA | Idaho Falls | United States |
| USIDC | Independence | United States |
| USIDD | Middlesex | United States |
| USIDE | Independence | United States |
| USIDG | Ida Grove | United States |
| USIDH | Idaho Springs | United States |
| USIDI | Indiana | United States |
| USIDL | Indianola | United States |
| USIDN | Indianola | United States |
| USIDO | Imperial | United States |
| USIDP | Independence | United States |
| USIDR | Widener | United States |
| USIDS | Lindsay | United States |
| USIDT | Indiantown | United States |
| USIDV | Midvale | United States |
| USIDW | Midwest City | United States |
| USIDY | Midland City | United States |
| USIER | Silverton | United States |
| USIES | Winters | United States |
| USIET | Marietta | United States |
| USIFA | Iowa Falls | United States |
| USIFL | Island Falls | United States |
| USIFP | Bullhead City | United States |
| USIFR | Ranier | United States |
| USIFT | Clifton | United States |
| USIGE | Slinger | United States |
| USIGG | Igiugig | United States |
| USIGH | Binghamton | United States |
| USIGM | Kingman | United States |
| USIGS | Big Stone | United States |
| USIHH | High Hill | United States |
| USIIA | Williamsville | United States |
| USIII | Davisville, Wood | United States |
| USIIV | Iron River | United States |
| USIJX | Jacksonville | United States |
| USIKA | Minooka | United States |
| USIKB | Wilkesboro | United States |
| USIKK | Kankakee | United States |
| USIKO | Nikolski | United States |
| USILA | Imlay City | United States |
| USILB | Millersburg | United States |
| USILD | Midland | United States |
| USILE | Killeen | United States |
| USILG | Wilmington | United States |
| USILI | Iliamna | United States |
| USILK | Silver Lake | United States |
| USILL | Willmar | United States |
| USILM | Wilmington | United States |
| USILN | Wilmington | United States |
| USILO | Lodi | United States |
| USILP | Illiopolis | United States |
| USILR | Millersport | United States |
| USILS | Wills Point | United States |
| USILT | Manito | United States |
| USILU | Buda | United States |
| USILV | Silvis | United States |
| USILY | Baileyville | United States |
| USIMA | Marion | United States |
| USIME | Wilmerding | United States |
| USIMK | Mokena | United States |
| USIML | Imperial | United States |
| USIMM | Immokalee | United States |
| USIMO | Monona | United States |
| USIMP | Imperial | United States |
| USIMR | Imperial | United States |
| USIMS | Williams | United States |
| USIMT | Iron Mountain | United States |
| USIMX | Climax | United States |
| USINA | Institute | United States |
| USINB | Windsor, Bertie | United States |
| USINC | Lincoln | United States |
| USIND | Indianapolis | United States |
| USINE | Independence | United States |
| USINF | Winfield | United States |
| USING | Inglewood | United States |
| USINH | Shelby | United States |
| USINI | Indianola | United States |
| USINJ | Iselin | United States |
| USINK | Wink | United States |
| USINL | International Falls | United States |