Places in Pennsylvania, page 23
Nicholson to Orvilla
- Nicholson
- Nickleville
- Nicklin
- Nicktown
- Nicodemus
- Nihil
- Nilan
- Niles
- Niles Valley
- Nine Row
- Ninepoints
- NinevehClarion County
- NinevehGreene County
- Nisbet
- Nisky
- Nittany
- Niver Junction
- Niverton
- Nixon
- NixonSusquehanna County
- Noble
- Noblestown
- Noel
- Nolo
- Nook
- Nordmont
- Norlynne Court
- Normal Square
- Normalville
- Norman
- Normandy
- Normandy Farms Estates
- Norrington Knoll
- Norris Hills Court
- Norristown
- Norrisville
- Norrition Woods
- Norritonville
- North Apollo
- North Bangor
- North Barnesboro
- North Belle Vernon
- North Bend
- North Bessemer
- North Bingham
- North Braddock
- North Buffalo
- North Butler
- North Catasauqua
- North Centre
- North Charleroi
- North Chase
- North Coplay
- North Cornwall
- North East
- North Edinburg
- North Eldred
- North Fogelsville
- North ForkButler County
- North ForkPotter County
- North Fredericktown
- North Freedom
- North Ghent
- North Heidelberg
- North HillsMontgomery County
- North HillsNorthumberland County
- North HillsYork County
- North Irwin
- North Jackson
- North Liberty
- North Manor
- North Mehoopany
- North Mills
- North Mountain
- North Oakland
- North Orwell
- North Park
- North Penn Crossing
- North Philipsburg
- North Pine Grove
- North PointBedford County
- North PointIndiana County
- North Rochester
- North Rome
- North Sandy
- North Scottdale
- North Sewickley
- North Skyline View
- North Springfield
- North Towanda
- North Vandergrift
- North Vandergrift-Pleasant View
- North Versailles
- North View Hills
- North Wales
- North Warren
- North WashingtonButler County
- North WashingtonWestmoreland County
- North Water Gap
- North Weissport
- North York
- Northampton
- Northampton Heights
- Northbrook
- Northern Cambria
- Northern Liberties
- Northmont
- Northumberland
- Northvue
- Northwest Harborcreek
- Northwood
- Northwood Heights
- Norvelt
- Norway
- Norwich
- Norwood
- Nossville
- NottinghamBucks County
- NottinghamChester County
- Nova
- Nowrytown
- Noxen
- Nuangola
- Nuangola Station
- Number Thirty-Seven
- Numidia
- NuMine
- Nunnery
- Nuremberg
- Nyesville
- O'Donnell
- O'Hara Township
- Oak Forest
- Oak GroveAdams County
- Oak GroveClearfield County
- Oak GroveMonroe County
- Oak GroveMontour County
- Oak GroveWashington County
- Oak GroveWestmoreland County
- Oak Grove Trailer Park
- Oak Hall
- Oak HillAllegheny County
- Oak HillClearfield County
- Oak HillLackawanna County
- Oak HillLancaster County
- Oak HillVenango County
- Oak Hills
- Oak LaneDelaware County
- Oak LaneMontgomery County
- Oak Lane Manor
- Oak Manor
- Oak ParkMontgomery County
- Oak ParkNorthumberland County
- Oak RidgeArmstrong County
- Oak RidgeClearfield County
- Oak Shade
- Oak Summit
- Oak Tree
- Oak Wood East
- Oakbourne
- Oakbrook
- Oakbrook Terrace
- Oakdale
- OakdaleLuzerne County
- Oakford
- Oakgrove
- Oakhurst
- Oakland
- OaklandAllegheny County
- OaklandChester County
- OaklandLawrence County
- OaklandMercer County
- OaklandSusquehanna County
- Oakland Mills
- Oaklane
- Oakleigh
- Oakley
- Oaklyn
- Oakmont
- OakmontDauphin County
- OakmontDelaware County
- Oakridge
- Oakryn
- Oaks
- Oaktree Hollow
- OakvilleCumberland County
- OakvilleWestmoreland County
- Oakwood
- Oakwood at Plymouth
- Oakwood Farms
- Oakwood Park
- Obelisk
- Oberlin
- Oberlin Gardens
- Ochre Mill
- Odell
- Odin
- Odle Corners
- Ogden
- Ogdensburg
- Ogdonia
- Ogle
- Ogletown
- Ogontz
- Ohiopyle
- Ohioview
- Ohioville
- Ohl
- Oil City
- Oil CityCambria County
- Okehocking Hills
- OklahomaClearfield County
- OklahomaWestmoreland County
- Okome
- Olanta
- Old Boston
- Old City
- Old Clarendon
- Old Concord
- Old Covered Bridge Estates
- Old Crabtree
- Old Ferry
- Old Forge
- Old ForgeFranklin County
- Old Fort
- Old Frame
- Old FurnaceBeaver County
- Old FurnaceUnion County
- Old Gum Tree
- Old Mill Pointe
- Old Mountain House
- Old Orchard
- Old Port
- Old Shade Furnace
- Old Sheffield
- Old Side
- Old Stanton
- Old Sugar Loaf
- Old Zionsville
- Old Zollarsville
- Olde Village
- Oleona
- Oleopolis
- Oley
- Oley Furnace
- Oley Line
- Oliphant Furnace
- Oliveburg
- Oliver
- Oliver Manor
- Oliver Mills
- Olivet
- Olmsted
- Olmsville
- Olney
- Olwen Heights
- Olyphant
- Onberg
- OneidaButler County
- OneidaSchuylkill County
- Oniontown
- Onnalinda
- Ono
- Onspaugh Corners
- Ontario
- Ontelaunee
- Ontelaunee Heights
- Oppenheimer
- Oppermans Corner
- Option
- Orange
- Orangeville
- Orbisonia
- Orchard Beach
- Orchard Courts
- Orchard Crest
- Orchard Glen
- Orchard HillWestmoreland County
- Orchard HillYork County
- Orchard Hills
- Orchard HillsBerks County
- Orchard Terrace
- Ore Hill
- Ore Valley
- Orefield
- Oregon
- Oregon Hill
- Oreland
- Oreminea
- Oreville
- Orient
- Oriental
- Oriole
- Ormrod
- Ormsby
- Orners Corner
- Orrstown
- Orrtanna
- Orson
- Orvilla