Post Offices List in Oil City City, Pennsylvania:
| Oil City Post Office | 302 E 2nd St, Oil City, PA 16301 |
| Oil City Post Office | 302 E 2nd St, Oil City, PA 16301 |
| Oil City Post Office | 302 E 2nd St, Oil City, PA 16301 |
| Oil City Post Office | 302 E 2nd St, Oil City, PA 16301 |