| Code | Name | Region |
|---|---|---|
| USSFK | Springfield | MD |
| USIID | Springfield | ME |
| USSNF | Springfield | MN |
| USSGF | Springfield | MO |
| USS8P | Springfield | NE |
| USIED | Springfield | NH |
| USSFI | Springfield | NJ |
| USSGH | Springfield | OH |
| USSPY | Springfield | OR |
| USNGF | Springfield | PA |
| USIEZ | Springfield | SC |
| USIGI | Springfield | SD |
| USSRG | Springfield | TN |
| USSPG | Springfield | VA |
| USVSF | Springfield | VT |
| USSFG | Springfield Gardens | NY |
| USVSJ | Springfield, Calhoun | MI |
| USSIQ | Springhill | LA |
| USRGK | Springhills | OH |
| USZPL | Spring Lake | MI |
| 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 |