Contact Us

Please contact a personalized banker at Cornerstone with any questions you may have. We have included a convenient form for you to use, or contact us by phone or stop by a bank location.

If your checks or ATM card are lost or stolen report immediately to Cornerstone Bank at 701-364-9630.

Reporting a Lost or Stolen debit card:
please call 888-297-2100.
After hours call:
800-472-3272 for MasterCard.

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NOTICE: Messages that you send to us by regular e-mail may not be secure. We recommend that you do not send any confidential information (such as social security numbers or account numbers) to us by regular e-mail. If you choose to send any confidential information to us via regular e-mail, you accept the risk that a third party may intercept this information. A "receipt" acknowledgement on an e-mail means only that the message has been routed to us via the Internet, not that the message has been received by CornerStone Bank.