| ALABAMA | PLR | PELL CITY ST CLAIR CO |
| INDIANA | PLD | PORTLAND MUNI |
| KIRIBATI | PLCH | KIRITIMATI (CHRISTMAS ISLAND) CHRISTMAS ISLAND |
| MICHIGAN | PLN | PELLSTON RGNL ARPT OF EMMET CO |
| MISSOURI | PLK | POINT LOOKOUT M. GRAHAM CLARK-TANEY CO |
| NEW YORK | PLB | PLATTSBURGH CLINTON CO |
| WASHINGTON | PLU | PUYALLUP PIERCE CO-THUN FLD |