Placename

Oldtown, South Carolina (Newberry County, South Carolina)
Oldtown, West Virginia (Mason County, West Virginia)
Oleo, California (Orange County, California)
Olga, South Carolina (Pickens County, South Carolina)
Olig, California (Kern County, California)
Olinda, California (Orange County, California)
Olio, Missouri (Stoddard County, Missouri)
Placename in Stoddard County
Olio, Tennessee (Van Buren County, Tennessee)
Olive City, Arizona (La Paz County, Arizona)
Olive Springs, California (Santa Cruz County, California)
Oliver, California (Yuba County, California)
Oliveville, Tennessee (White County, Tennessee)
Olympia, Georgia (Lowndes County, Georgia)
Olympia, Ohio (Fayette County, Ohio)
Omar, Maryland (Anne Arundel County, Maryland)
Omba, Missouri (Douglas County, Missouri)
Omega, Rhode Island (Providence County, Rhode Island)
Omega, Tennessee (Houston County, Tennessee)
Omo, Louisiana (Evangeline Parish, Louisiana)
On-a-Slant Village, North Dakota (Morton County, North Dakota)
Ona, Arkansas (Arkansas County, Arkansas)
Onalaska, Arkansas (Ouachita County, Arkansas)
Oneill, Montana (Custer County, Montana)
Oneonta, Kansas (Cloud County, Kansas)
Oneota, Nevada (Esmeralda County, Nevada)
Oneota, Nevada (Lincoln County, Nevada)
Onie, West Virginia (Wetzel County, West Virginia)
Onihitsk, Alaska (Kodiak Island Borough, Alaska)
Onomea, Hawaii (Hawaii County, Hawaii)
Onoqua, Alabama (Autauga County, Alabama)
Onville, Virginia (Stafford County, Virginia)
Oo-moo-chah, California (Sacramento County, California)
Ootens Store, Kentucky (Clinton County, Kentucky)
Opegoi, California (Humboldt County, California)
Opeleika, Georgia (Catoosa County, Georgia)
Opera, Ohio (Muskingum County, Ohio)
Ophelia, Mississippi (Rankin County, Mississippi)
Ophelia, West Virginia (Nicholas County, West Virginia)
Ophir City, Nevada (Washoe County, Nevada)
Ophir, Montana (Chouteau County, Montana)
Ophir, Nevada (Nye County, Nevada)
Opitz, Arkansas (Saline County, Arkansas)
Oponys Town, Florida (Polk County, Florida)
Opossum, Tennessee (Hawkins County, Tennessee)
Opposition, Arkansas (Lawrence County, Arkansas)
Populated place in Spring River Township, Lawrence County
Orange Grove, Maryland (Baltimore County, Maryland)
Orange Grove, Maryland (Howard County, Maryland)
Orangeburg, Ohio (Preble County, Ohio)
Orchard Homes, Idaho (Latah County, Idaho)
Orchard Point, Missouri (Shannon County, Missouri)
Placename in Shannon County
Orchard, Arkansas (Perry County, Arkansas)
Orchard, Missouri (Carter County, Missouri)
Placename in Jackson Township, Carter County
Ore'q, California (Humboldt County, California)
Oreana, Nevada (Pershing County, Nevada)
Oreb, Arkansas (Howard County, Arkansas)
Oregon, Arkansas (Boone County, Arkansas)
Oregon, Tennessee (Wilson County, Tennessee)
Orella, California (Santa Barbara County, California)
Oriana, Texas (Stonewall County, Texas)
Orico, Georgia (Jeff Davis County, Georgia)
Original, Nevada (Nye County, Nevada)
Oriole, West Virginia (Preston County, West Virginia)
Orion, California (Kings County, California)
Oriza, Louisiana (Acadia Parish, Louisiana)
Orizaba, Nevada (Nye County, Nevada)
Orland, South Dakota (Lake County, South Dakota)
Orleans, Georgia (Rockdale County, Georgia)
Orleans, Missouri (Polk County, Missouri)
Orlem, California (Tulare County, California)
Orletta, Georgia (Stewart County, Georgia)
Oro Fino, Idaho (Clearwater County, Idaho)
Oro, Colorado (Lake County, Colorado)
Orr, Arkansas (Mississippi County, Arkansas)
Populated place in Neal Township, Mississippi County
Orr, Louisiana (East Baton Rouge Parish, Louisiana)
Ortiz, Missouri (Audrain County, Missouri)
Ortiz, New Mexico (Santa Fe County, New Mexico)
Orville, North Carolina (Mecklenburg County, North Carolina)
Osage Village, Oklahoma (Rogers County, Oklahoma)
Osborn, Arkansas (Benton County, Arkansas)
Osbornes, Virginia (Chesterfield County, Virginia)
Oscar, Kansas (Clay County, Kansas)
Oscar, Montana (Hill County, Montana)
Osceola, Oklahoma (Custer County, Oklahoma)
Oshkosh, Louisiana (Natchitoches Parish, Louisiana)
Osier, Michigan (Delta County, Michigan)
Osochi, Florida (Jackson County, Florida)
Osotouy, Arkansas (Arkansas County, Arkansas)
Ossette, Montana (Daniels County, Montana)
Ostrovski, Alaska (Kenai Peninsula Borough, Alaska)
Oswald, West Virginia (Raleigh County, West Virginia)
Otho, Ohio (Morgan County, Ohio)
Otipalin, Alabama (Calhoun County, Alabama)
Ott, South Carolina (Bamberg County, South Carolina)
Ottention, North Dakota (Pembina County, North Dakota)
Otter Creek, Missouri (Wayne County, Missouri)
Placename in Wayne County
Otter Creek, North Carolina (Rutherford County, North Carolina)
Otter View, Virginia (Bedford County, Virginia)
Otter, Illinois (LaSalle County, Illinois)
Otto Spur, Missouri (New Madrid County, Missouri)
Placename in West Township, New Madrid County
Otto, Georgia (Union County, Georgia)
Otto, Illinois (Fulton County, Illinois)
Out, Missouri (Stoddard County, Missouri)
Placename in Liberty Township, Stoddard County
Ovejo, California (Madera County, California)
Overton, Louisiana (Webster Parish, Louisiana)
Overton, Nevada (Humboldt County, Nevada)
Ovid, Missouri (Ray County, Missouri)
Oviet, Missouri (Cass County, Missouri)
Owen, Missouri (Lincoln County, Missouri)
Owens, South Carolina (Laurens County, South Carolina)
Owens, Tennessee (Williamson County, Tennessee)
Owl Town, Ohio (Clark County, Ohio)
Owls Town, Ohio (Coshocton County, Ohio)
Oxbow, Oregon (Baker County, Oregon)
Oxford, Illinois (Henry County, Illinois)
Oxtoby, Ohio (Clark County, Ohio)
Oyak, Alaska (Bethel Census Area, Alaska)
Ozark Mills, Missouri (Iron County, Missouri)
Placename in Iron County
Ozark, Iowa (Jackson County, Iowa)
Ozella, Alabama (Tallapoosa County, Alabama)
Ozmont Bluff, Arkansas (Drew County, Arkansas)
P?pa‘i, Hawaii (Hawaii County, Hawaii)
Pacatacan, New York (Delaware County, New York)
Pace, Tennessee (Henry County, Tennessee)
Paces, Alabama (Marengo County, Alabama)
Paceville, Georgia (Jeff Davis County, Georgia)
Pacific City, Washington (Pacific County, Washington)
Pacific, Tennessee (Jackson County, Tennessee)
Packwood, California (Kern County, California)
Pactola, South Dakota (Pennington County, South Dakota)
Pactolus, Arkansas (Benton County, Arkansas)
Pad, West Virginia (Roane County, West Virginia)
Padgett Crossing, Georgia (Jefferson County, Georgia)
Padgett, Alabama (Jackson County, Alabama)
Paducah, Mississippi (Washington County, Mississippi)
Paepcke, Arkansas (Mississippi County, Arkansas)
Populated place in Bowen Township, Mississippi County
Page, Pennsylvania (Huntingdon County, Pennsylvania)
Pages, South Carolina (Horry County, South Carolina)
Paint Rock, Tennessee (Roane County, Tennessee)
Palace, Missouri (Greene County, Missouri)
Palatkee, Georgia (Evans County, Georgia)
Palestine, Alabama (Lauderdale County, Alabama)
Palestine, Iowa (Van Buren County, Iowa)
Palestine, Tennessee (Lewis County, Tennessee)
Palin, Tennessee (Loudon County, Tennessee)
Palisades Del Rey, California (Los Angeles County, California)
Palm, North Carolina (Haywood County, North Carolina)
Palmer, California (Santa Barbara County, California)
Palmer, Maryland (Carroll County, Maryland)
Palmyra, Nevada (Lyon County, Nevada)
Palo Blanco, New Mexico (Colfax County, New Mexico)
Paloma (Calaveras County, California)
Paloma, California (Kern County, California)
Paloma, Louisiana (East Feliciana Parish, Louisiana)
Paltchikatno, Alaska (Yukon-Koyukuk Census Area, Alaska)
Pamunkey, Virginia (Hanover County, Virginia)
Panamenik, California (Humboldt County, California)
Pane, Alabama (Colbert County, Alabama)
Panther Creek, Tennessee (Hamblen County, Tennessee)
Panther, Tennessee (Anderson County, Tennessee)
Paola, California (Modoc County, California)
Paplin, Nebraska (Howard County, Nebraska)
Paraclifta, Arkansas (Sevier County, Arkansas)
Paradise, Arkansas (Drew County, Arkansas)
Paradise, Ohio (Wayne County, Ohio)
Paragon, Louisiana (De Soto Parish, Louisiana)
Paraje, New Mexico (Socorro County, New Mexico)
Pardue, Tennessee (Dickson County, Tennessee)
Parham, Arkansas (Arkansas County, Arkansas)
Parina, Kentucky (Bracken County, Kentucky)
Paris, Iowa (Linn County, Iowa)
Unincorporated community
Paris, Montana (McCone County, Montana)
Paris, North Carolina (Anson County, North Carolina)
Paris, Oregon (Malheur County, Oregon)
Park Canyon, Nevada (Nye County, Nevada)
Park City, Colorado (Park County, Colorado)
Park Dale, Montana (Valley County, Montana)
Parkdale, Montana (Flathead County, Montana)
Parker Town, Tennessee (Stewart County, Tennessee)
Parker, Georgia (Monroe County, Georgia)
Parker, Nevada (White Pine County, Nevada)
Parkers, Georgia (Sumter County, Georgia)
Parkersville, Oregon (Baker County, Oregon)
Parkeville, Mississippi (Noxubee County, Mississippi)
Parkhurst, Iowa (Johnson County, Iowa)
Parks Place, Mississippi (Issaquena County, Mississippi)
Parksville, Iowa (Van Buren County, Iowa)
Parkville, Colorado (Summit County, Colorado)
Parlatt, Ohio (Harrison County, Ohio)
Parma, Arkansas (Desha County, Arkansas)
Parn, Arkansas (Benton County, Arkansas)
Parnell, Texas (Roberts County, Texas)
Parris, Texas (Collin County, Texas)
Partridge, Arizona (Santa Cruz County, Arizona)
Paschal, Georgia (Talbot County, Georgia)
Pashaw, Missouri (Vernon County, Missouri)
Pates Field, Virginia (Isle of Wight County, Virginia)
Pates, Arkansas (Howard County, Arkansas)
Patrons Union, Mississippi (Newton County, Mississippi)
Patsey, West Virginia (Roane County, West Virginia)