| Code | Name | Region |
|---|---|---|
| USPMZ | Palmertown | PA |
| USPMT | Palmetto | FL |
| USPFP | Palmetto | GA |
| USP64 | Palmetto Bay | FL |
| USPQE | Palmetto, Bossier | LA |
| USPFM | Palmetto, Saint Landry | LA |
| US7PV | Palmview | TX |
| USPYA | Palmyra | IN |
| US8MY | Palmyra | ME |
| USXPM | Palmyra | MI |
| USPMR | Palmyra | MO |
| USP5M | Palermo | ME |
| USP3S | Palestine | AR |
| USZH4 | Palestine | IL |
| USPSN | Palestine | TX |
| USPDZ | Palisade | CO |
| USPDJ | Palisade | MN |
| USPDE | Palisade | NJ |
| USIAS | Palisades | NY |
| USPSA | Palisades Park | NJ |
| USPQM | Palm | PA |
| USPBY | Palm Bay | FL |
| USPAB | Palm Beach | FL |
| USPMG | Palm Beach Gardens | FL |
| USPMI | Palm City | FL |
| USPLM | Palm Coast | FL |
| USPMD | Palm Desert | CA |
| USXKI | Palm Harbor | FL |
| USPSP | Palm Springs | CA |
| USP2S | Palm Springs | FL |
| USQPL | Palmdale | CA |
| USPGO | Pagosa Springs | CO |
| USPHK | Pahokee | FL |
| USPQV | Pahrump | NV |
| USZQ3 | Paicines | CA |
| USPMU | Paimiut | AK |
| USXXQ | Paincourtville | LA |
| USPVZ | Painesville | OH |
| USP5R | Paint Rock | AL |
| USPWY | Painted Post | NY |
| USPE9 | Painter | VA |
| USPCE | Painter Creek | AK |
| USPAI | Paintsville | KY |
| USPY6 | Paisley | FL |
| USAJO | Pajaro | CA |
| USJPL | Pala | CA |
| USPSX | Palacios | TX |
| USPLE | Palatine | IL |
| USPBE | Palatine Bridge | NY |
| USPLT | Palatka | FL |