| Code | Name | Region |
|---|---|---|
| USPQC | Pomona | CA |
| USPQO | Pomona | IL |
| USPMO | Pomona | MO |
| USPMA | Pomona | NY |
| USPPM | Pompano Beach | FL |
| USPO8 | Pompton | NJ |
| USP7L | Pompton Lakes | NJ |
| USPMJ | Pompton Plains | NJ |
| USPNC | Ponca City | OK |
| US4NM | Ponce De Leon | FL |
| USOPS | Poncha Springs | CO |
| USPCS | Ponchatoula | LA |
| USPP3 | Point Pleasant Beach | NJ |
| USPRT | Point Retreat | AK |
| US9IU | Point Reyes Station | CA |
| USPRS | Point Roberts | WA |
| USOW4 | Point Wells | WA |
| USPHC | Pointe A La Hache | LA |
| USPXL | Polacca | AZ |
| USZE6 | Poland | ME |
| USYXD | Poland | NY |
| USQPD | Poland | OH |
| USPLD | Poland Spring | ME |
| USS6O | Polar | WI |
| USPG7 | Polk | PA |
| USP3K | Polk City | FL |
| USPOQ | Polk Inlet | AK |
| USNKK | Polkton | NC |
| USP2O | Pollock | LA |
| US9PL | Pollock Pines | CA |
| USZKV | Pollocksville | NC |
| USPOO | Polo | IL |
| USBSF | Pohakuloa | HI |
| USPFL | Poinciana | FL |
| UST9S | Point | TX |
| USPA2 | Point Arena | CA |
| USKPB | Point Baker | AK |
| USTBW | Point Barrow | AK |
| USPB9 | Point Breeze | PA |
| USPC8 | Point Clear | AL |
| USPCR | Point Comfort | TX |
| USPP5 | Point Conception | CA |
| USPHO | Point Hope | AK |
| USPJH | Point Judith | RI |
| USPIZ | Point Lay | AK |
| USUPX | Point Lookout | PA |
| USTMD | Point Marion | PA |
| USPWC | Point Mugu Nawc | CA |
| USPFS | Point Of Rocks | WY |
| USZHC | Point Pleasant | NJ |