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Contact Us


Clayton Branch
112 S. Hanley, Suite 120
Clayton, MO 63105


Macks Creek Branch
PO Box 180
41 State Road W
Macks Creek, MO 65786


Des Peres Branch
11697 Manchester Road
Des Peres, MO 63131


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Report a Lost or Stolen Card

Report your lost or stolen debit card immediately. Please notify us at 314-721-2265 during business hours and we will get your existing debit card deleted to prevent any future transactions. If you need immediate help after hours or on a weekend call 800-472-3272 to delete your existing card. On the next business day, follow up with your nearest M1 Bank Branch to reissue you a new card.

During Business Hours:

Call 314-721-2265

After Hours:

Call 800-472-3272

The M1 Team

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