| Business | Phone |
| Lambton Meadowview Villa 3958 Petrolia Line, Petrolia N0N 1R0 | (519) 882-1470 |
| Lorne C Henderson Cnsrvtn Area Rr 4, Petrolia N0N 1R0 | (519) 882-2280 |
| Petrolia & District Centennial 4130 Glenview, Petrolia N0N 1R0 | (519) 882-2232 |
| Petrolia Municipal Clerk 411 Greenfield, Petrolia N0N 1R0 | (519) 882-2350 |
| Petrolia Branch Library 4200 Petrolia, Petrolia N0N 1R0 | (519) 882-0771 |
| Petrolia Arena 4065 Dufferin Ave, Petrolia N0N 1R0 | (519) 882-1570 |
| Victoria Playhouse Petrolia 411 Greenfield St, Petrolia N0N 1R0 | (519) 882-1221 |
| Enniskillen Township Office 4465 Rokeby Line, Petrolia N0N 1R0 | (519) 882-2490 |