| Code | Name | Region |
|---|---|---|
| USLB4 | Leesburg | TX |
| USLXU | Leesburg | VA |
| USLEP | Leesport | PA |
| USLSV | Leesville | LA |
| USUJZ | Leesville | SC |
| USEET | Leetonia | OH |
| USLSL | Leetsdale | PA |
| US9LH | Left Hand | WV |
| USLEI | Lehi | UT |
| USKK8 | Lehigh | OK |
| USQEC | Leblanc | LA |
| USLTQ | Lecanto | FL |
| USLCP | Lecompte | LA |
| USDBM | Ledbetter | TX |
| USLWO | Ledgewood | NJ |
| USLDY | Ledyard Center | CT |
| USQLE | Lee | FL |
| USLJE | Lee | IL |
| USLEH | Lee | MA |
| USL8E | Lee | ME |
| USVNV | Lee | NH |
| USLQE | Lee | NY |
| USLEC | Leechburg | PA |
| US5FQ | Leedey | OK |
| USLDS | Leeds | AL |
| USLE5 | Leeds | MA |
| USDJD | Leeds | MD |
| USL2E | Leeds | ME |
| USXHK | Leeds | MO |
| USLD6 | Leeds | ND |
| USLVX | Leavittsburg | OH |
| USLWK | Leawood | KS |
| USLBO | Lebanon | CT |
| USLVB | Lebanon | IL |
| USLBD | Lebanon | IN |
| US4NB | Lebanon | KS |
| USLFA | Lebanon | KY |
| USIBO | Lebanon | ME |
| USLBM | Lebanon | MO |
| USLN7 | Lebanon | NH |
| USXHL | Lebanon | NJ |
| USLNB | Lebanon | OH |
| USXZO | Lebanon | OK |
| USLON | Lebanon | OR |
| USLBP | Lebanon | PA |
| USLBN | Lebanon | TN |
| USL9B | Lebanon | VA |
| USLJ2 | Lebanon Junction | KY |
| USYLB | Lebec | CA |
| USLQR | Le Roy | KS |