P
- Pacific
- Pacific Beach
- Packard
- Packwood
- Page
- Page
- Paha
- Palisades
- Palmer
- Palm Lake
- Palouse
- Pampa
- Paradise Hill
- Parker
- Park Junction
- Parkland
- Park Rapids
- Parkwood
- Parrott Crossing
- Parvin
- Pasco
- Pataha
- Pataha City
- Pateros
- Paterson
- Patit
- Paxton
- Pearl
- Pearson Eddy
- Pebble Beach
- Pedigo
- Pe Ell
- Penawawa
- Penn Cove Park
- Penrith
- Peola
- Peone
- Perrinville
- Peshastin
- Pickard
- Piedmount
- Pierce
- Pifer
- Pigeon Springs
- Pilchuck
- Pine City
- Pinecliff
- Pine Glen
- Pine Grove
- Pine Lake
- Pinkney City
- Pioneer
- Plain
- Plaza
- Pleasant Hill
- Pleasant Valley
- Pleasant Valley
- Pleasant View
- Plumb
- Pluvius
- Plymouth
- Point Roberts
- Pollard
- Pomeroy
- Pomona
- Ponders Corner
- Portage
- Port Angeles
- Port Angeles East
- Port Blakely
- Port Crescent
- Port Discovery
- Porter
- Port Gamble
- Port Kelley
- Port Ludlow
- Port Madison
- Port Orchard
- Port Stanley
- Port Townsend
- Port Williams
- Possession
- Poulsbo
- Prairie
- Prairie Ridge
- Prescott
- Preston
- Prevost
- Priest Point
- Proebstel
- Prosser
- Providence
- Puget
- Pullman
- Purdy
- Purrington
- Puyallup
- Pysht