Mainstreet Credit Union

Contact Us

By phone

Contact your local branch location directly during business hours, or you may wish to phone our main Mainstreet number 519-436-4590.

In person

With 8 branches there is a location nearby to serve you!

Use our interactive map to find a branch or ATM closest to you.

Online

Any questions, comments or kudos send us a message online:

By mail

Our general mailing address:

40 Keil Drive South
Chatham, ON
N7M 3G8

Report a lost or stolen debit card

Contact us immediately if you suspect your card has been stolen or your information has been compromised.

1-800-567-8111 (24 hours a day, 7 days a week)

Get web site technical support

If you're experiencing technical difficulties with our website, including being unable to access your online account, please contact our technical support team.

1-888-273-3488 (24 hours a day, 7 days a week)