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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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  • Introducing Curbside Banking

    We are bringing the bank to you in the comfort and safety of your vehicle.

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  • Banking at a Glance

    Although our lobbies remain closed, we're still here to assist you with your financial needs. We kindly ask that you help our GNB family members stay healthy too. Here's how!

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  • Loan Promotions

    GNB has the loan you need... Farm/Ag, Commercial or Home!

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  • Added Security for Your Debit Card

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  • Meet Bill Raney

    Bill has been working for the customers of GNB Bank through/via
    GNB Investments since 2006 and has been a Financial Advisor for over 26 years.

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Home Mortgages Turn Your Dream into Reality!

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Building a Strong Foundation for Our Community

So much of the success of our communities comes from the hard work and determination of local small business owners and agricultural producers. That's why we offer our support through strong banking and lending services.

See Our Business & Ag Services