| Code | Name | Region |
|---|---|---|
| USYIR | Lemitar | NM |
| USLMC | Lemmon | IL |
| USLEM | Lemmon | SD |
| USL9C | Lemon City | FL |
| USLG3 | Lemon Grove | CA |
| USLMJ | Lemont | IL |
| USLMU | Lemont Furnace | PA |
| USNLC | Lemoore | CA |
| USLYP | Lemoyne | PA |
| US8LE | Lempster | NH |
| USLEN | Lena | IL |
| USLNQ | Lena | LA |
| USLN3 | Lena | MS |
| USLWX | Lena | WI |
| USLH7 | Lenard Harbour | AK |
| USLXA | Lenexa | KS |
| USLV7 | Lenhartsville | PA |
| USENI | Lenni | PA |
| USLOX | Lennox | CA |
| USQOX | Lennox | SD |
| USLEG | Lehigh | PA |
| USLEF | Lehigh Acres | FL |
| USLHO | Lehigh Valley | PA |
| USLHG | Lehighton | PA |
| USL2H | Lehr | ND |
| USLCM | Leicester | MA |
| USLC6 | Leicester | NC |
| US7LS | Leicester | NY |
| USLGF | Leigh | NE |
| USLGT | Leighton | AL |
| USLSJ | Leipsic | OH |
| USLCF | Leitchfield | KY |
| USLEJ | Leland | IA |
| US4LL | Leland | IL |
| USLLD | Leland | MS |
| USLLC | Leland | NC |
| USLRJ | Lemars | IA |
| USPMS | Lemasters | PA |
| USLMY | Lemay | MO |
| USLMZ | Lemeta | AK |
| USLED | Leeds | SC |
| USLD5 | Leeds | UT |
| USQEP | Leeper | PA |
| USLSU | Lees Summit | MO |
| USLSM | Lee's Summit | MO |
| USLZG | Leesburg | AL |
| USLEE | Leesburg | FL |
| USLES | Leesburg | GA |
| USEYG | Leesburg | IN |
| USLSO | Leesburg | OH |