| Code | Name | Region |
|---|---|---|
| USLAR | Laramie | WY |
| USZLR | Larchmont | NY |
| USLA8 | Larchwood | IA |
| USLRD | Laredo | TX |
| USXHV | Largo | FL |
| USLGQ | Largo | MD |
| USLRR | Larimore | ND |
| USKSU | Larkspur | CA |
| USLP7 | Larkspur | CO |
| USLD7 | Larned | KS |
| USLRS | Larose | LA |
| USKLN | Larsen Bay | AK |
| USIN2 | Larwill | IN |
| USLRU | Las Cruces | NM |
| USLF9 | Las Flores | CA |
| USLVS | Las Vegas | NM |
| USLAS | Las Vegas | NV |
| US7AX | Latexo | TX |
| USKLM | Latham | KS |
| USQLD | Lansdowne | PA |
| USLB9 | Lansdowne-baltimore | MD |
| USLAJ | L'anse | MI |
| USLF7 | Lansford | ND |
| USLZP | Lansford | PA |
| USW77 | Lansing | IA |
| USLSI | Lansing | IL |
| USLSG | Lansing | KS |
| USLAN | Lansing | MI |
| USLAG | Lansing | NC |
| USAIG | Lansing | OH |
| USLQG | Lansing | WV |
| USLSZ | Lansing, Tomkins | NY |
| USLNT | Lantana | FL |
| USLNU | Laona | WI |
| USOTJ | Laotto | IN |
| USAPE | Lapeer | MI |
| USL4A | Lapel | IN |
| USLPI | Lapoint | UT |
| USZEE | Laporte | CO |
| USJLR | Lanesborough | MA |
| USL54 | Lanesville | IN |
| USYLT | Lanett | AL |
| USLTE | Lanett | GA |
| USQNW | Laneview | VA |
| USLDO | Langdon | ND |
| USGXJ | Langdon | NH |
| USLHH | Langeloth | PA |
| USXHS | Langhorne | PA |
| USLGY | Langley | SC |
| USYGZ | Langley | VA |