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To contact us by phone:
Member Service Line:
800-556-5154 or (414) 546-7450

Guardian Line / 24-hour telephone teller:
800-941-1313 or (414) 856-9323

Lost or Stolen Guardian Debit Card:
800-556-5154 or (414) 546-7450

To contact us by mail:
Guardian Credit Union
P.O. Box 270124
West Allis, WI 53227

Need a password for the Guardian Line?
The first time you call, your access code will be the last four digits of your social security number. After accessing the Guardian Line for the first time, you will be asked to personalize your access code. If you need help, please call our Member Service Line, 800-556-5154.

Credit Union Service Centers
Through a network of shared branches, you can access your Guardian Credit Union accounts at thousands of convenient locations nationwide. Whether you are at work, home, or your favorite travel destination, your credit union is always nearby.

 BRANCH locations