| Code | Name | Region |
|---|---|---|
| USLR4 | Le Roy | MI |
| USC2W | Le Roy | MN |
| USUQG | Le Roy | NY |
| USUQA | Le Suer | MN |
| USLUU | Le Sueur | MN |
| USLHL | Leachville | AR |
| USLDQ | Lead | SD |
| USLHZ | Lead Hill | AR |
| USDZE | Leadore | ID |
| USLXV | Leadville | CO |
| USZLT | League City | TX |
| USLK4 | Leakey | TX |
| USLM7 | Leamington | UT |
| USLEA | Leander | TX |
| USLS3 | Leasburg | MO |
| USL5Q | Leatherwood | KY |
| USL2V | Leavenworth | IN |
| USXIA | Leavenworth | KS |
| USLVN | Leavenworth | WA |
| USLWV | Lawrenceville | IL |
| USLAV | Lawrenceville | KY |
| USLRV | Lawrenceville | NJ |
| USLVC | Lawrenceville | PA |
| USLVL | Lawrenceville | VA |
| USAWZ | Lawsonville | NC |
| USTWW | Lawton | IA |
| USLW5 | Lawton | MI |
| USLAW | Lawton | OK |
| USLW2 | Lawyers | VA |
| USLTJ | Layton | UT |
| USAY5 | Laytonville | CA |
| USLC3 | Le Center | MN |
| USC6L | Le Claire | IA |
| USLCG | Le Compte | LA |
| USLZQ | Le Grand | CA |
| USEMS | Le Mars | IA |
| USZHL | Le Moyen | LA |
| US9LM | Le Moyne | AL |
| USLRQ | Le Roy | IL |
| USZVE | Lavallette | NJ |
| USLVH | Laveen | AZ |
| USVFE | Laverne | OK |
| USLV3 | Lavinia | TN |
| USQLV | Lavon | TX |
| USAOI | Lavonia | GA |
| USS6S | Lawler | IA |
| USLWJ | Lawndale | CA |
| USAWA | Lawndale | NC |
| USLW7 | Lawnside | NJ |
| USLWC | Lawrence | KS |