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  • 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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Online Banking Notice

Online Banking will be updated on Monday, August 14 and will be unavailable from 12:00 AM - 5:00 AM. 

Once the upgrade has been completed, users may be asked to answer one or more of their security questions.

For questions or concerns, contact GNB Bank at 800-545-0172.