Pennsylvania Cities that begin with O

There are 31 cities in Pennsylvania that start with the letter O.

31 cities

City
2024 Pop.
O'Hara township8,877
Oakdale1,411
Oakland552
Oakland township2,704
Oakland township1,323
Oakmont6,579
Ohio township7,331
Ohiopyle36
Ohioville3,285
Oil City9,302
Oil Creek township1,653
Oklahoma768
Old Forge8,654
Old Lycoming township4,910
Oley township3,852
Oliver township2,036
Oliver township2,053
Olyphant5,382
Ontelaunee township3,011
Orange township1,174
Orangeville478
Orbisonia445
Orrstown212
Orwell township1,190
Orwigsburg3,004
Osceola Mills1,004
Oswayo129
Otto township1,463
Overfield township1,427
Oxford5,884
Oxford township6,068
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Cities in Pennsylvania by First Letter