| Locality | Postal Code |
|---|---|
| Clintonville, Venango | 16372 |
| Cooperstown, Venango | 16317 |
| Cranberry, Venango | 16319 |
| Emlenton, Venango | 16373 |
| Franklin, Venango | 16323 |
| Harrisville, Venango | 16038 |
| Kennerdell, Venango | 16374 |
| Oil City, Venango | 16301 |
| Oil Creek, Venango | 16301 |
| Pleasantville, Venango | 16341 |
| Polk, Venango | 16342 |
| Reno, Venango | 16343 |
| Rocky Grove, Venango | 16323 |
| Rouseville, Venango | 16344 |
| Seneca, Venango | 16346 |
| Titusville, Venango | 16354 |
| Utica, Venango | 16362 |
| Venus, Venango | 16364 |