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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.

Chatham

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Hours of Operation

Sunday Closed
Monday 9:00am - 5:00pm
Tuesday 9:00am - 5:00pm
Wednesday 9:00am - 5:00pm
Thursday 9:00am - 5:00pm
Friday 9:00am - 5:00pm
Saturday 9:00am - 1:00pm

Contact Information

40 Keil Drive South
Chatham, Ontario N7M 3G8

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Services

ATM (Interior)
Business & Agricultural Accounts
Business & Agricultural Lending
Business Mastercards
Cash Services
Financial Planning
Investment Services
Personal Accounts
Personal Loans & Lines of Credit
Personal Mastercards
Personal Mortgages
Personal Savings Accounts, Terms, Registered Savings
Photo of Chatham Mainstreet branch.