| Business | Phone |
| City Council 21 Seneca St, Oil City 16301 | (814) 678-3012 |
| Cornplanter Twp Municipal Office 136 Petroleum St, Oil City 16301 | (814) 676-1744 |
| Oil City Accounting Dept 21 Seneca St, Oil City 16301 | (814) 678-3009 |
| Oil City Code Adm 21 Seneca St, Oil City 16301 | (814) 678-3003 |
| Oil City Engineering 21 Seneca St, Oil City 16301 | (814) 678-3020 |
| President Twp Office 139 Henrys Bend Rd, Oil City 16301 | (814) 676-6787 |
| Towne Towers 7 E 2nd St # 100, Oil City 16301 | (814) 676-9315 |