| Business | Phone |
| Southwest Regional Credit 297 Chippewa St, Sarnia N7T 7H9 | (519) 344-2403 |
| Lambton Financial Cu Ltd 300 Huron Blvd, Sarnia N7T 7J4 | (519) 344-9538 |
| Lambton Financial Cu Ltd 1295 London Rd, Sarnia N7S 1P6 | (519) 542-9059 |
| Railway Employees Credit Union 431 Russell St S, Sarnia N7T 3N1 | (519) 336-0093 |
| Southwest Credit Union Ltd 1205 Exmouth St, Sarnia N7S 1W7 | (519) 383-0750 |
| Southwest Regional Cu Ltd 1205 Exmouth St, Sarnia N7S 1W7 | (519) 383-8001 |
| St Willlibord Community Cu 1315 Exmouth St, Sarnia N7S 3Y1 | (519) 542-5578 |