| Code | Name | Region |
|---|---|---|
| USNAY | Pine Valley | NY |
| USPBL | Pinebluff | NC |
| USPIN | Pinecreek | MN |
| USPC2 | Pinecrest | CA |
| USPNA | Pinedale | AZ |
| USPNL | Pinedale | CA |
| USPD8 | Pinedale | WY |
| USP5T | Pinehurst | GA |
| USPHS | Pinehurst | MA |
| USPHZ | Pinehurst | NC |
| USQIT | Pinehurst | TX |
| USPLN | Pineland | FL |
| USP5N | Pine | CO |
| USPAA | Pine Apple | AL |
| USPBF | Pine Bluff | AR |
| USQPS | Pine Bluffs | WY |
| USPBO | Pine Brook | NJ |
| USYPN | Pine Bush | NY |
| USP4C | Pine Castle | FL |
| USPNY | Pine City | MN |
| USPE3 | Pine City | NY |
| USPJF | Pine Cove | CA |
| USPF6 | Pine Forge | PA |
| USVZV | Pine Grove | CA |
| USPZG | Pine Grove | PA |
| USPGJ | Pine Grove, Clearfield | PA |
| USPNH | Pine Hall | NC |
| USPID | Pine Hill | AL |
| USVHP | Pine Hill | NJ |
| USYPI | Pine Island | MN |
| USPNI | Pine Island | NY |
| USIKN | Pine Knot | KY |
| USPZY | Piggott | AR |
| US7PR | Pike Road | AL |
| USPXZ | Pikesville | MD |
| USPKU | Piketon | OH |
| USPKK | Pikeville | KY |
| USPK6 | Pikeville | NC |
| USPIK | Pikeville | TN |
| USPGX | Pillager | MN |
| USPP7 | Pillow | PA |
| USPM8 | Pilot Mountain | NC |
| USPIP | Pilot Point | AK |
| USPQP | Pilot Point | TX |
| USPQS | Pilot Station | AK |
| USPIW | Pilottown | LA |
| USGPM | Pima | AZ |
| USIHO | Pimento | IN |
| USPXP | Pinckard | AL |
| USYVP | Pinckneyville | IL |