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Change Preferred Branch

  • ACKLEY
    650 Main St, Box 149 - Ackley

  • CONRAD
    103 E Center St, Box 400 - Conrad

  • GENEVA
    408 Front St - Geneva

  • GRUNDY CENTER
    529 G Ave, Box 246 - Grundy Center

  • GRUNDY CENTER LOAN BANK
    510 F Ave, Box 246 - Grundy Center

  • IOWA FALLS
    315 Main St - Iowa Falls

  • MANCHESTER
    300 E Main St, Box 439 - Manchester

  • MARSHALLTOWN
    2504 S 2nd St, Box 736 - Marshalltown

  • STORY CITY
    629 Broad St, Box 128 - Story City

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Lost/Stolen Card

Replace Your Debit or Credit Card

Having your card lost or stolen can be trying.  Let us know immediately so we can help protect you against unauthorized transactions.


To Report a Lost or Stolen Debit Card

During business hours, please call GNB at 800-545-0172.

During non-business hours, please call Shazam at 800-383-8000. A SHAZAM fraud specialist will provide assistance.

 


To Report a Lost or Stolen Credit Card

During business hours, please call GNB at 800-545-0172.

During non-business hours, please call 800-423-7503.  A customer service representative will provide assistance.