| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
|---|
| Osborn | city | Pennsylvania | United States | 41.46194 | -80.28917 | 1377 | 2389 |
| Osborne | city | Pennsylvania | United States | 40.53167 | -80.16917 | 846 | 40497 |
| Osburn | city | Pennsylvania | United States | 40.29667 | -79.36333 | 1017 | 23651 |
| Oscar | city | Pennsylvania | United States | 40.84028 | -79.37139 | 1108 | 2752 |
| Osceola | city | Pennsylvania | United States | 41.98194 | -77.34278 | 1197 | 2252 |
| Osceola Mills | city | Pennsylvania | United States | 40.85 | -78.27083 | 1505 | 5001 |
| Osgood | city | Pennsylvania | United States | 41.44472 | -80.36778 | 997 | 9645 |
| Oshanter | city | Pennsylvania | United States | 40.93528 | -78.46167 | 1597 | 4361 |
| Ostend | city | Pennsylvania | United States | 40.86917 | -78.71917 | 1299 | 1126 |
| Osterburg | city | Pennsylvania | United States | 40.16944 | -78.52056 | 1190 | 2615 |
| Osterhout | city | Pennsylvania | United States | 41.50972 | -75.89889 | 600 | 5774 |
| Oswayo | city | Pennsylvania | United States | 41.92111 | -78.01861 | 1699 | 910 |
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