| Code | Name | Region |
|---|---|---|
| USSL3 | Spring Lake | NC |
| USSX7 | Spring Lake | NJ |
| USRLH | Spring Lake Park | MN |
| USP7M | Spring Mills | PA |
| USSOS | Spring Park | MN |
| USSPN | Spring Valley | IL |
| USJVJ | Spring Valley | MN |
| USGTX | Spring Valley | TX |
| USVYW | Spring Valley | WI |
| USSPV | Spring Valley, Rockland | NY |
| USPGY | Spring Valley, San Diego | CA |
| USSQO | Springboro | OH |
| USSPZ | Springdale | AR |
| USSRL | Springdale | OH |
| USSPD | Springdale | PA |
| US3SP | Springdale | UT |
| USAZV | Springerville | AZ |
| USSPI | Springfield | IL |
| USRNF | Springfield | KY |
| USSP9 | Spraggs | PA |
| USZZQ | Sprague | WA |
| USS89 | Spragueville | IA |
| USABS | Spring | TX |
| USNGA | Spring Arbor | MI |
| USSB7 | Spring Branch | TX |
| USUYL | Spring City | PA |
| USSGD | Spring City | TN |
| USIQI | Spring City | UT |
| USIGC | Spring Creek | NV |
| USQSG | Spring Green | WI |
| USSG3 | Spring Grove | IL |
| USPVM | Spring Grove | MN |
| USZSG | Spring Grove | PA |
| USS3G | Spring Grove | VA |
| USSHI | Spring Hill | FL |
| USRGI | Spring Hill | KS |
| USIR3 | Spring Hill | TN |
| USSRO | Spring Hope | NC |
| USSFH | Spring House | PA |
| USECE | Spencerville | OH |
| USEHY | Sperry | OK |
| US2SP | Sperryville | VA |
| USICE | Spiceland | IN |
| US8SP | Spicer | MN |
| USSKV | Spicewood | TX |
| USSK9 | Spickard | MO |
| USLX8 | Spillville | IA |
| USSEQ | Spindale | NC |
| USRTL | Spirit Lake | IA |
| USPL8 | Spirit Lake | ID |