| ZIP Code | ZIP Code Place Name | County | ZIP Code Type |
|---|---|---|---|
| 16038 | Harrisville | Butler County | Standard |
| 16127 | Grove City | Mercer County | Standard |
| 16153 | Stoneboro | Mercer County | Standard |
| 16301 | Oil City | Venango County | Standard |
| 16314 | Cochranton | Crawford County | Standard |
| 16317 | Cooperstown | Venango County | Standard |
| 16319 | Cranberry | Venango County | Standard |
| 16323 | Franklin | Venango County | Standard |
| 16341 | Pleasantville | Venango County | Standard |
| 16342 | Polk | Venango County | Standard |
| 16343 | Reno | Venango County | PO Box |
| 16344 | Rouseville | Venango County | PO Box |
| 16346 | Seneca | Venango County | Standard |
| 16353 | Tionesta | Forest County | Standard |
| 16354 | Titusville | Venango County | Standard |
| 16362 | Utica | Venango County | Standard |
| 16364 | Venus | Venango County | Standard |
| 16372 | Clintonville | Venango County | PO Box |
| 16373 | Emlenton | Venango County | Standard |
| 16374 | Kennerdell | Venango County | Standard |