| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
|---|
| Oppenheimer | city | Pennsylvania | United States | 40.12361 | -78.47139 | 1364 | 3154 |
| Oppermans Corner | city | Pennsylvania | United States | 40.07833 | -75.63444 | 423 | 32823 |
| Option | city | Pennsylvania | United States | 40.34639 | -79.97361 | 1102 | 149151 |
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