| Code | Name | Region |
|---|---|---|
| USHPE | Shepherd | TX |
| US8ST | Shepherdstown | WV |
| USSQN | Shepherdsville | KY |
| USXSX | Sheppard | TX |
| US9SP | Sheppton | PA |
| USZSO | Sherborn | MA |
| USSRR | Sherburne | NY |
| USSIW | Sheridan | AR |
| USSDV | Sheridan | CO |
| US5SD | Sheridan | IL |
| USSD9 | Sheridan | IN |
| USSJX | Sheridan | MI |
| USSRD | Sheridan | NY |
| USSJG | Sheridan | OR |
| USSHR | Sheridan | WY |
| USXMP | Sherman | CT |
| USSZM | Sherman | MS |
| USDZZ | Sherman | NY |
| USSXP | Sheldon Point | AK |
| USSQK | Sheldon Springs | VT |
| USVSV | Sheldonville | MA |
| USEOB | Shell Knob | MO |
| USHL8 | Shell Lake | WI |
| USSR2 | Shell Rock | IA |
| USSHZ | Shelley | ID |
| USXMC | Shellman | GA |
| USS8H | Shelocta | PA |
| USXSI | Shelter Island | NY |
| USHDH | Shelter Island Heights | NY |
| USSQR | Shelton | CT |
| USJLT | Shelton | NE |
| USSHN | Shelton | WA |
| USSYA | Shemya | AK |
| USUYS | Shenandoah | GA |
| USSDH | Shenandoah | IA |
| USDOH | Shenandoah | TX |
| USSZH | Shenandoah | VA |
| USSJ8 | Shenandoah Junction | WV |
| USINH | Shelby | IN |
| USSDL | Shelby | MI |
| USSBX | Shelby | MT |
| USSEY | Shelby | NC |
| USNE5 | Shelby | NE |
| USSBI | Shelby | OH |
| USW7W | Shelby | WI |
| USSN8 | Shelby Township | MI |
| USSBV | Shelbyville | IL |
| USSYH | Shelbyville | IN |
| USSVZ | Shelbyville | KY |
| USQYV | Shelbyville | MI |