| Code | Name | Region |
|---|---|---|
| USES8 | Esopus | NY |
| USNUR | Enosburg Center | VT |
| USEBF | Enosburg Falls | VT |
| USENS | Ensley | AL |
| USETS | Enterprise | AL |
| USKFJ | Enterprise | KS |
| USKJF | Enterprise | KS |
| USEPP | Enterprise | MS |
| USENP | Enterprise | OR |
| USEEP | Enterprise, Washington | UT |
| USEN7 | Entiat | WA |
| USECW | Enumclaw | WA |
| USEQI | Eolia | MO |
| USERM | Ephraim | UT |
| USEHP | Ephrata | PA |
| USEPH | Ephrata | WA |
| USEP7 | Epping | NH |
| US8EP | Epsom | NH |
| USQIY | Equality | IL |
| USE7R | Erath | LA |
| USER9 | Erda | UT |
| USEW4 | Englewood | NY |
| USOZ2 | Englewood | OH |
| USEEW | Englewood | TN |
| USENG | Englewood Cliffs | NJ |
| USND2 | Englewood Yard | TX |
| USEN3 | English | IN |
| USKEB | English Bay | AK |
| USUFX | Englishtown | NJ |
| USWDG | Enid | OK |
| USEIM | Enigma | GA |
| USENK | Enka | NC |
| USEN5 | Ennice | NC |
| USE9E | Enning | SD |
| USE5N | Ennis | MT |
| USENE | Ennis | TX |
| USEOJ | Enochs | TX |
| USEL7 | Enola | PA |
| USENM | Enon | OH |
| USOYU | Enon Valley | PA |
| USEON | Enoree | SC |
| USENO | Encino | CA |
| USECF | Encino | TX |
| USEND | Endeavor | PA |
| USEPV | Endeavor | WI |
| USEEQ | Enderlin | ND |
| USEQT | Endicott | NE |
| USENC | Endicott | NY |
| USW9N | Endwell | NY |
| USERG | Energy | IL |