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24-Hour Cardmember Service / Report a lost or stolen card
We accept relay calls
Outside the United States: 701-461-2105 (call collect)
U.S. Bank National Association
P.O. Box 790408
St. Louis, MO 63179-0408
Make sure to include your account number in the memo area of your check.
U.S Bank National Association
P.O. Box 6349
Fargo, ND 58125-6349
For questions specific to an existing account, please Log in to Online Banking to authenticate that you are the account owner:
- Log in to Online Banking
- Under the “Customer Service” tab, select “Contact Us”
- Select "Email Us"
For general questions about the Mariano’s Rewards World Mastercard® program, contact us by email.