Zephaniah Platt (landowner) Pleasanton, California and Pleasanton, Kansas – Alfred Pleasonton (Union Army general) Pocahontas, Illinois and Pocahontas, Missouri – Pocahontas Pocatello, Idaho – Chief Pocatello Pokagon Township, Michigan – Chief Pokagon (Pottawattomie leader) Poland, Maine – Chief Poland Poland, Ohio – George Poland (proprietor) Polk County – James K. Polk, 11 places: Arkansas – Florida – Georgia – Iowa – Minnesota – Missouri – Nebraska – Oregon – Tennessee – Texas – Wisconsin Polkton, North Carolina – Bishop Leonidas Polk Polo, Illinois – Marco Polo Pomeroy, Ohio – Samuel Wyllis Pomeroy (proprietor) Pomins, California – Frank J. Pomin (first postmaster) Pompey, New York – Pompey (Roman general) Pontiac, Illinois and Pontiac, Michigan – Chief Pontiac Pontotoc, Mississippi – Pontotoc (Chickasaw chief) Pooler, Georgia – Robert William Pooler (railroad employee) Pope Valley, California – William Pope (land grantee) Poplarville, Mississippi – "Poplar" Jim Smith (storekeeper) Port Arthur, Texas – Arthur Edward Stilwell (founder) Port Clinton, Ohio – DeWitt Clinton (father of the Erie Canal) Port Clinton, Pennsylvania – DeWitt Clinton (father of the Erie Canal) Port Colden, New Jersey – Cadwallader D. Colden (president of the Morris Canal and Banking Company) Port Dickinson, New York – Daniel S. Dickinson (U.S. Senator) Port Gibson, Mississippi – David Gibson (landowner) Port Kenyon, California – John Gardner Kenyon (founder) Port Jervis, New York – John Bloomfield Jervis (engineer with the Delaware and Hudson Canal) Port Morris, Bronx, New York – Gouverneur Morris Port Murray, New Jersey – James Boyles Murray (third president of the Morris Canal and Banking Company) Port Orford, Oregon – George Walpole, 3rd Earl of Orford Port Penn, Delaware – William Penn Port Richey, Florida – Captain Aaron M. Richey Port Townsend, Washington – George Townshend, 1st Marquess Townshend Porter, Indiana – Commodore David Porter Porter, Maine – Dr. Aaron Porter (proprietor) Portola, California – Gaspar de Portolà Portola Valley, California – Gaspar de Portolà Poseyville, Indiana – Gen. Thomas Posey (governor) Post Falls, Idaho – Frederick Post (lumber mill builder) Posts, California – William Brainard Post (homesteader) Potter, New York – Arnold Potter (proprietor) Potter Township, Centre County, Pennsylvania – Gen. James Potter Potter Valley, California – William and Thomas Potter (early settlers) Pottersville, Michigan – George N. Potter Potts Camp, Mississippi – Col. E.F. Potts Pottstown, Pennsylvania – John Potts (landowner) Pottsville, Pennsylvania – John Potts (landowner) (This is the same John Potts as Pottstown). Poultney, Vermont –