Name | Population | Altitude | Latitude | Longitude |
Oak Forest : |
| 305 m | 39°50'30.8" N | 80°14'21.1" W |
Oak Grove : |
| 182 m | 41°0'28.1" N | 76°43'9.8" W |
Oak Hall : |
| 335 m | 40°47'38.0" N | 77°48'10.1" W |
Oak Hill : |
| 308 m | 40°25'32.9" N | 79°48'47.2" W |
Oak Hills (Oak Hills) : | 2 369 | 384 m | 40°49'28.9" N | 79°54'47.9" W |
Oak Lane : |
| 22 m | 40°3'23.0" N | 75°7'18.1" W |
Oak Lane Manor : |
| 91 m | 40°3'6.1" N | 75°6'42.1" W |
Oak Manor : |
| 194 m | 39°55'1.9" N | 76°40'40.1" W |
Oak Park : |
| 150 m | 40°54'50.0" N | 76°45'38.2" W |
Oak Ridge : |
| 349 m | 41°0'27.0" N | 79°17'46.0" W |
Oak Shade : |
| 144 m | 39°48'15.8" N | 76°6'46.1" W |
Oak Summit : |
| 91 m | 40°5'42.0" N | 75°9'36.0" W |
Oak Tree : |
| 403 m | 40°48'38.2" N | 79°3'1.1" W |
Oakbourne : |
| 121 m | 39°56'25.1" N | 75°34'41.9" W |
Oakdale (Oakdale) : | 1 551 | 296 m | 40°23'53.2" N | 80°11'8.9" W |
Oakford : |
| 30 m | 40°8'53.9" N | 74°57'51.1" W |
Oakgrove : |
| 182 m | 40°17'60.0" N | 77°16'45.1" W |
Oakhurst : |
| 380 m | 40°21'29.2" N | 78°56'40.9" W |
Oakland : |
| 334 m | 40°26'30.8" N | 79°57'46.1" W |
Oakland Mills : |
| 182 m | 40°36'51.8" N | 77°19'1.9" W |
Oaklane : |
| 61 m | 40°3'18.0" N | 75°7'23.9" W |
Oakleigh : |
| 127 m | 40°15'29.2" N | 76°49'14.9" W |
Oakley : |
| 276 m | 41°44'12.1" N | 75°45'16.9" W |
Oaklyn : |
| 152 m | 40°51'29.9" N | 76°45'15.8" W |
Oakmont (Oakmont) : | 6 911 | 245 m | 40°31'18.1" N | 79°50'33.0" W |
Oakridge : |
| 153 m | 39°56'11.0" N | 76°42'33.1" W |
Oakryn : |
| 122 m | 39°46'36.1" N | 76°8'30.1" W |
Oaks : |
| 30 m | 40°7'54.1" N | 75°27'36.0" W |
Oaktree Hollow : |
| 15 m | 40°8'52.1" N | 74°50'26.9" W |
Oakville : |
| 181 m | 40°7'34.0" N | 77°27'20.2" W |
Oakwood (Oakwood) : | 2 115 | 304 m | 41°0'38.2" N | 80°22'46.9" W |
Oakwood Park : |
| 121 m | 40°14'26.2" N | 76°57'33.1" W |
Obelisk : |
| 91 m | 40°17'17.2" N | 75°30'42.1" W |
Oberlin : |
| 152 m | 40°14'29.0" N | 76°48'54.0" W |
Oberlin Gardens : |
| 152 m | 40°14'37.0" N | 76°49'22.1" W |
Ochre Mill : |
| 457 m | 41°7'41.9" N | 75°46'50.9" W |
Odell : |
| 365 m | 40°6'46.1" N | 80°6'31.0" W |
Odin : |
| 518 m | 41°41'52.1" N | 78°5'12.1" W |
Odle Corners : |
| 515 m | 41°56'52.1" N | 77°20'20.0" W |
Ogden : |
| 12 m | 39°49'46.9" N | 75°27'24.1" W |
Ogdensburg : |
| 541 m | 41°36'55.1" N | 76°58'14.9" W |
Ogdonia : |
| 264 m | 41°24'41.0" N | 76°42'20.9" W |
Ogle : |
| 331 m | 40°42'15.1" N | 80°6'15.8" W |
Ogletown : |
| 730 m | 40°12'9.0" N | 78°42'11.9" W |
Ohiopyle (Ohiopyle) : | 74 | 366 m | 39°52'18.1" N | 79°29'33.0" W |
Ohioview : |
| 213 m | 40°39'14.0" N | 80°23'17.2" W |
Ohioville (Ohioville) : | 3 643 | 330 m | 40°40'45.1" N | 80°29'42.0" W |
Ohl : |
| 426 m | 41°4'59.9" N | 79°9'40.0" W |
Oil City (Oil City) : | 10 891 | 319 m | 41°26'2.0" N | 79°42'24.1" W |
Oklahoma : |
| 429 m | 41°6'50.0" N | 78°44'1.0" W |
Okome : |
| 515 m | 41°26'13.9" N | 77°24'47.9" W |
Olanta : |
| 420 m | 40°55'0.1" N | 78°30'24.1" W |
Old Boston : |
| 303 m | 41°17'35.9" N | 75°46'7.0" W |
Old Clarendon : |
| 428 m | 41°46'26.0" N | 79°6'6.8" W |
Old Colonial Village : |
| 122 m | 40°19'12.0" N | 76°49'36.1" W |
Old Concord : |
| 365 m | 40°0'31.0" N | 80°20'12.8" W |
Old Crabtree : |
| 336 m | 40°21'0.0" N | 79°26'19.0" W |
Old Ferry : |
| 136 m | 40°31'40.1" N | 77°8'16.1" W |
Old Forge (Old Forge) : | 8 798 | 223 m | 41°22'16.0" N | 75°44'7.1" W |
Old Fort : |
| 388 m | 40°50'7.1" N | 77°40'18.8" W |
Old Frame : |
| 359 m | 39°48'27.0" N | 79°51'45.0" W |
Old Furnace : |
| 292 m | 40°47'43.1" N | 80°10'13.1" W |
Old Gum Tree : |
| 344 m | 40°40'28.9" N | 79°31'27.8" W |
Old Mountain House : |
| 516 m | 40°1'8.0" N | 78°11'21.1" W |
Old Orchard (Old Orchard) : | 2 364 | 78 m | 40°39'28.1" N | 75°15'45.0" W |
Old Port : |
| 148 m | 40°31'30.0" N | 77°23'30.1" W |
Old Shade Furnace : |
| 609 m | 40°9'6.1" N | 78°49'39.0" W |
Old Sheffield : |
| 427 m | 41°40'12.0" N | 79°1'27.1" W |
Old Side : |
| 457 m | 41°3'41.0" N | 77°56'26.9" W |
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