| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Ott Town | city | Pennsylvania | United States | 39.98 | -78.45 | 1197 | |
| Ottawa | city | Pennsylvania | United States | 41.08 | -76.70 | 830 | |
| Otterbein | city | Pennsylvania | United States | 40.12 | -77.60 | 830 | |
| Otto | city | Pennsylvania | United States | 40.34 | -79.89 | 925 | |
| Otto | city | Pennsylvania | United States | 40.72 | -76.80 | 830 | |
| Ottsville | city | Pennsylvania | United States | 40.47 | -75.16 | 347 |