| Code | Name | Region |
|---|---|---|
| USS9H | Shallowater | TX |
| USYSH | Shamokin | PA |
| USSH4 | Shamong | NJ |
| USSR5 | Shamrock, Wheeler | TX |
| USJHD | Shandon | CA |
| USDOZ | Shandon | OH |
| USNRI | Shangri-la | OK |
| USAZK | Shannock | RI |
| USSHO | Shannon | GA |
| USS7N | Shannon | IL |
| USSZN | Shannon | MS |
| USS2N | Shannon | NC |
| US8IG | Shapleigh | ME |
| USS7H | Sharon | CT |
| USSHM | Sharon | MA |
| USSHQ | Sharon | PA |
| USSN3 | Sharon | VT |
| USISH | Sharon | WI |
| USEYU | Seymour | TN |
| USSET | Seymour | TX |
| USSYW | Seymour | WI |
| USS97 | Shackelefords | VA |
| USS5F | Shacklefords | VA |
| USDGP | Shade Gap | PA |
| USAD2 | Shadeland, Tippecanoe | IN |
| USSZJ | Shady Dale | GA |
| USDYG | Shady Grove | PA |
| USIYP | Shady Point | OK |
| USRYS | Shady Spring | WV |
| USSHY | Shadyside | OH |
| USSF7 | Shafer | MN |
| USMIT | Shafter | CA |
| USSH3 | Shafter, Kern | CA |
| USS2H | Shaftsbury | VT |
| USSHX | Shageluk | AK |
| USXSK | Shaker Heights | OH |
| USSKE | Shakopee | MN |
| USSKK | Shaktoolik | AK |
| USS7V | Severance | CO |
| USSEV | Severn | MD |
| USSVN | Severn | NC |
| USSVJ | Severn | VA |
| USSNR | Severna Park | MD |
| USSXR | Sevier | NC |
| USSVU | Sevierville | TN |
| USZVL | Seville | OH |
| USUOS | Sewanee | TN |
| USSWD | Seward | AK |
| USQSR | Seward | IL |
| USNSR | Seward | NE |