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Get convenient access to friendly, knowledgeable people.

Contact Us

Get in touch with us today.

If you need to send mail, please use the address for our headquarters:

Credit Union ONE
400 E. Nine Mile Road
Ferndale, MI 48220

You also can reach us conveniently by phone. Use these numbers to the get the answers you need.

Contact Center

Monday - Thursday: 7:30 a.m. - 5:30 p.m.
Friday: 7:30 a.m. - 6:00 p.m.
Saturday: 9:00 a.m. - 1:00 p.m.

Consumer Lending

Monday - Thursday: 8:30 a.m. - 5:00 p.m.
Friday: 8:30 a.m. - 6:00 p.m.
Saturday: 10:00 a.m. - 12:30 p.m.

Chat Hours

Monday - Friday: 7:30 a.m. - 8:00 p.m.
Saturday: 9:00 a.m. - 1:00 p.m.

Real Estate Lending


Monday - Friday: 8:30 a.m. - 5:00 p.m.

Activate Your Mastercard® Debit Card


24-Hour Telephone Banking


Change Your Mastercard® Debit Card Pin


Report a Lost or Stolen Mastercard® Credit Card


Report a Lost or Stolen Mastercard® Debit Card

Inside the U.S., 24/7: 800-449-7728
Outside the U.S.: 727-299-2449

Online Banking and Bill Pay Assistance



Always at your service

When you need answers, you don't want to wait around. That's why we offer various options for contacting us so you can get in touch with friendly professionals who can provide the guidance you need.