Tolong jelaskan mengenai P dari Daftar kota di Oregon

Pacific City - Paisley - Parkdale - Paulina - Payette Junction - Pendleton - Perrydale - Philomath - Phoenix - Pilot Rock - Pine - Pine Grove - Pinehurst - Pistol River - Pittsburg - Pleasant Hill - Pleasant Valley - Plush - Pondosa - Portland - Port Orford - Post - Powell Butte - Powers - Prairie City - Pratum - Prescott - Prineville - Progress* - Prospect - Provolt