We’ve updated our website! You’ll notice a fresh new look as we’ve made improvements to enhance your experience. As we complete the transition, some areas may continue to settle in, but everything you’re looking for is still here.

May 28, 2026 - 3:30pm Please be advised that our Petrolia branch telephone is currently unavailable. For immediate assistance, please reach out to our Member Experience Centre using your preferred method of communication. To contact our Petrolia branch directly, please email us a petrolia@mainstreetcu.ca.