| Code | Name | Region |
|---|---|---|
| USSDO | South Hill | VA |
| USSUI | South Holland | IL |
| USHQU | South Houston | TX |
| USHHS | South Hutchinson | KS |
| US3SJ | South Jamesport | NY |
| USSDR | South Johnson City | TN |
| USXSJ | South Jordan | UT |
| USSK2 | South Kearny | NJ |
| USSK7 | South Kent | CT |
| USS7K | South Kingstown | RI |
| USTVL | South Lake Tahoe | CA |
| USS6H | South Lebanon | OH |
| USSDT | South Lee | MA |
| USTDY | South Londonderry | VT |
| USS6L | South Lyon | MI |
| USXMF | South Miami | FL |
| USMR8 | South Milford | IN |
| USAA9 | South Mills | NC |
| USMK6 | South Milwaukee | WI |
| USUHS | South Dennis | MA |
| USQSN | South Easton | MA |
| USSDM | South El Monte | CA |
| USSE2 | South Elgin | IL |
| USS3C | South Euclid | OH |
| USQPZ | South Fallsburg | NY |
| USSF4 | South Fork | PA |
| USSGC | South Gate | CA |
| USOUG | South Gate | FL |
| USYSY | South Glastonbury | CT |
| USJGF | South Glens Falls | NY |
| USSOQ | South Grafton | MA |
| USHKS | South Hackensack/new Jersey | NJ |
| USSYM | South Hadley | MA |
| USZYX | South Hamilton | MA |
| USZJX | South Hampton | NH |
| USSOH | South Haven | MI |
| USH77 | South Haven | MN |
| USUYT | South Haven | MS |
| USUHA | South Heart | ND |
| USSBL | South Beloit | IL |
| USSBN | South Bend | IN |
| USS3B | South Bend | LA |
| USACJ | South Bend | WA |
| USZYW | South Berwick | ME |
| USHH4 | South Bethlehem | NY |
| USTBM | South Boardman | MI |
| USSBC | South Boston | MA |
| USSOG | South Boston | VA |
| USS8B | South Bristol | ME |
| USXLN | South Brunswick | NJ |