List of places in Pennsylvania: O

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This list of cities, towns, unincorporated communities, counties, and other recognized places in the U.S. state of Pennsylvania also includes information on the number and names of counties in which the place lies, and its lower and upper zip code bounds, if applicable.


Name of placeNumber of countiesPrincipal countyLower zip codeUpper zip code
Oak Forest 1 Greene County 15370 
Oak Grove 1 Adams County   
Oak Grove 1 Clearfield County 16858 
Oak Grove 1 Monroe County   
Oak Grove 1 Montour County   
Oak Grove 1 Schuylkill County 17963 
Oak Grove 1 Washington County   
Oak Grove 1 Westmoreland County 15658 
Oak Hall 1 Centre County 16827 
Oak Hill 1 Allegheny County 1513715145
Oak Hill 1 Clearfield County 16845 
Oak Hill 1 Lackawanna County 18507 
Oak Hill 1 Lancaster County   
Oak Hill 1 Venango County   
Oak Hills 1 Butler County   
Oak Lane 1 Montgomery County 19012 
Oak Lane 1 Philadelphia County 19126 
Oak Park 1 Montgomery County 19446 
Oak Park 1 Northumberland County 17857 
Oak Ridge 2 Armstrong County 16245 
Oak Ridge 1 Clearfield County   
Oak Shade 1 Lancaster County 17566 
Oak Tree 1 Indiana County   
Oakbottom 1 Lancaster County 17566 
Oakbourne 1 Chester County   
Oakbrook 1 Berks County   
Oakdale 1 Allegheny County 15071 
Oakdale 1 Luzerne County 18224 
Oakford 1 Bucks County 19053 
Oakhurst 1 Cambria County   
Oakland 1 Allegheny County 15213 
Oakland 1 Armstrong County   
Oakland 1 Cambria County   
Oakland 1 Lawrence County 16101 
Oakland 1 Mercer County   
Oakland 1 Susquehanna County 18847 
Oakland Beach 1 Crawford County 16316 
Oakland Mills 1 Juniata County 17076 
Oakland Township 1 Butler County   
Oakland Township 1 Susquehanna County   
Oakland Township 1 Venango County   
Oaklane Manor 1 Montgomery County 19012 
Oakleigh 1 Dauphin County 17111 
Oakley 1 Susquehanna County   
Oaklyn 1 Northumberland County 17801 
Oakmont 1 Allegheny County 15139 
Oakmont 1 Cambria County 15904 
Oakmont 1 Delaware County 15139 
Oakryn 1 Lancaster County 17563 
Oaks 1 Montgomery County 19456 
Oaktree Hollow 1 Bucks County   
Oakvale Boulevard 1 Butler County 16002 
Oakville 1 Cumberland County 17257 
Oakville 1 Westmoreland County 15650 
Oakwood 1 Lawrence County   
Obelisk 1 Montgomery County 19492 
Oberlin 1 Dauphin County 17113 
Oberlin Gardens 1 Dauphin County 17113 
Obold 1 Berks County   
Ochre Mill 1 Luzerne County   
Odell 1 Washington County   
Odenthal 1 Cambria County 15946 
Odenwelder 1 Northampton County 18042 
Odin 1 Potter County 16915 
O'Donnell 1 Jefferson County   
Ogden 1 Delaware County 19061 
Ogden Park 1 Delaware County 19062 
Ogdensburg 1 Tioga County 17765 
Ogdonia 1 Sullivan County   
Ogle 1 Butler County 16046 
Ogle Township 1 Somerset County   
Ogletown 1 Somerset County 15963 
Ogontz 1 Montgomery County 19117 
O'Hara Township 1 Allegheny County   
Ohio Township 1 Allegheny County   
Ohio Township 1 Beaver County   
Ohiopyle 1 Fayette County 15470 
Ohioview 1 Beaver County 15052 
Ohioville 1 Beaver County 15059 
Ohl 1 Jefferson County 15864 
Oil City 1 Cambria County 15925 
Oil City 1 Venango County 16301 
Oil Creek 1 Venango County 16301 
Oil Creek Township 1 Crawford County   
Oilcreek Township 1 Venango County   
Oklahoma 1 Clearfield County 15801 
Oklahoma 1 Westmoreland County 15613 
Okome 1 Lycoming County 17739 
Olanta 1 Clearfield County 16863 
Old Boston 1 Luzerne County 18641 
Old Clarendon 1 Warren County 16313 
Old Concord 1 Washington County 15329 
Old Crabtree 1 Westmoreland County 15650 
Old Cranberry 1 Luzerne County   
Old Enon 1 Lawrence County 16120 
Old Forge 1 Delaware County 19060 
Old Forge 1 Franklin County   
Old Forge 1 Lackawanna County 18518 
Old Fort 1 Centre County   
Old Frame 1 Fayette County 15478 
Old Furnace 1 Beaver County   
Old Junction 1 Somerset County 15501 
Old Line 1 Lancaster County 17545 
Old Lycoming Township 1 Lycoming County   
Old Meadow 1 Westmoreland County 15683 
Old Mountain House 1 Fulton County   
Old Orchard 1 Northampton County 18042 
Old Port 1 Juniata County 17082 
Old Shade Furnace 1 Somerset County   
Old Side 1 Centre County   
Old Stanton 1 Westmoreland County 15672 
Old Zionsville 1 Lehigh County 18068 
Old Zollarsville 1 Washington County   
Oleona 1 Potter County   
Oleopolis 1 Venango County 16301 
Oley 1 Berks County 19547 
Oley Furnace 1 Berks County 1952219547
Oley Line 1 Berks County 19547 
Oley Township 1 Berks County   
Oliphant Furnace 1 Fayette County 15401 
Oliveburg 1 Jefferson County 15764 
Oliver 1 Fayette County 15472 
Oliver Mills 1 Luzerne County   
Oliver Township 1 Jefferson County   
Oliver Township 1 Mifflin County   
Oliver Township 1 Perry County   
Olivers Mills 1 Luzerne County 18702 
Olivet 1 Armstrong County 15618 
Olmsted 1 Potter County   
Olmsville 1 Tioga County   
Olney 1 Philadelphia County 19120 
Olyphant 1 Lackawanna County 18447 
Onberg 1 Indiana County 15701 
Oneida 1 Butler County 16001 
Oneida 1 Schuylkill County 18242 
Oneida Junction 1 Luzerne County 18201 
Oneida Township 1 Huntingdon County   
Oniontown 1 Mercer County   
Onnalinda 1 Cambria County 15921 
Ono 1 Lebanon County 17077 
Onspaugh Corners 1 Crawford County   
Ontario 1 Washington County 15324 
Ontelaunee 1 Berks County 19605 
Ontelaunee Township 1 Berks County   
Opp 1 Lycoming County 17756 
Oppenheimer 1 Bedford County   
Oppermans Corner 1 Chester County 19425 
Option 1 Allegheny County 15236 
Orange 1 Luzerne County 18612 
Orange Township 1 Columbia County   
Orangeville 1 Columbia County 17859 
Orbisonia 1 Huntingdon County 17243 
Orchard Beach 1 Erie County 16428 
Orchard Crest 1 Cumberland County   
Orchard Crossing 1 Blair County 16686 
Orchard Hill 1 Westmoreland County 15666 
Orchard Hills 1 Armstrong County 15613 
Orchard Hills 1 Delaware County 19063 
Orchard Park 1 Lancaster County 17601 
Ore Hill 1 Blair County 16673 
Ore Valley 1 York County 17403 
Orefield 1 Lehigh County 18069 
Oregon 1 Lancaster County 17540 
Oregon Hill 1 Lycoming County 16938 
Oregon Township 1 Wayne County   
Oreland 1 Montgomery County 19075 
Oreminea 1 Blair County 16693 
Oreville 1 Berks County 19539 
Orient 1 Fayette County 15420 
Oriental 1 Juniata County 17045 
Oriole 1 Lycoming County 17740 
Ormrod 1 Lehigh County 18037 
Ormsby 1 McKean County 16726 
Orners Corner 1 Blair County 16601 
Orrstown 1 Franklin County 17244 
Orrtanna 1 Adams County 17353 
Orrton 1 Berks County   
Orrville 1 Allegheny County 15144 
Orson 1 Wayne County 18449 
Orvilla 1 Montgomery County 19440 
Orville 1 Allegheny County 15144 
Orviston 1 Centre County 16864 
Orwell 1 Bradford County 18837 
Orwell Township 1 Bradford County   
Orwig 1 York County   
Orwigsburg 1 Schuylkill County 17961 
Orwin 1 Schuylkill County 17980 
Osborn 1 Mercer County   
Osborne 1 Allegheny County 15143 
Oscar 1 Armstrong County   
Osceola 1 Clearfield County   
Osceola 1 Tioga County 16942 
Osceola Mills 1 Clearfield County 16666 
Osceola Township 1 Tioga County   
Osgood 1 Mercer County 16125 
Oshanter 1 Clearfield County 16830 
Ostend 1 Clearfield County 15757 
Osterburg 1 Bedford County 16667 
Osterhout 1 Wyoming County 18657 
Oswayo 1 Potter County 16915 
Oswayo Township 1 Potter County   
Ott Town 1 Bedford County 15537 
Ottawa 1 Montour County 17821 
Otter Creek Township 1 Mercer County   
Otterbein 1 Franklin County   
Otto 1 Northumberland County   
Otto Township 1 McKean County   
Ottown 1 Bedford County 15537 
Ottsville 1 Bucks County 18942 
Outcrop 1 Fayette County 15478 
Outlet 1 Luzerne County 18612 
Outwood 1 Schuylkill County 17963 
Oval 1 Lycoming County 17759 
Overbrook 1 Allegheny County   
Overbrook 1 Philadelphia County 19151 
Overbrook Hills 1 Montgomery County 19151 
Overfield Township 1 Wyoming County   
Overholt Acres 1 Westmoreland County 15642 
Overleigh 1 Montgomery County 19004 
Overlook 1 Lancaster County 17601 
Overlook 1 Northumberland County   
Overlook Heights 1 Centre County   
Overlook Springs 1 Lehigh County   
Overshot 1 Bradford County   
Overton 1 Bradford County 18833 
Overton Township 1 Bradford County   
Overview 1 Cumberland County 17053 
Owassee 1 Tioga County   
Owens Corners 1 Erie County   
Owensdale 1 Fayette County 15425 
Owl Hollow 1 Bradford County   
Owls Nest 1 Elk County   
Owltown 1 Venango County   
Oxford 1 Chester County 19363 
Oxford Township 1 Adams County   
Oxford Valley 1 Bucks County   
Oyster Point 1 Lancaster County 17601 

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