Welcome to GNB Bank! GNB is proud to be a locally owned, community bank with a focus on friendly, personal service from people you know and trust. We take care of the communities we serve – families, small businesses, local agriculture, and we care about you! I invite you to sample the financial services we offer – from loans, insurance and investments to the basics like checking and savings. Stop in and see me – my door is always open.


Bob Johanns ~ GNB Bank President and C.O.O.

Board of Directors

Front row: (l to r) Stefanie Rohler, Bob Johanns, Mark Sexton and Randy Phelps
Back row: Kevin Swalley, Kirby Schmidt, Jerry Bakker and Mike Freed

Grundy Center Location 529 G Avenue, PO Box 246 Grundy Center, IA 50638 Phone: 319-824-5431 Toll Free: 800-545-0172 Fax: 319-824-3854

Marshalltown Location 2504 S 2nd Street, PO Box 736 Marshalltown, IA 50158 Phone: 641-753-4040 Toll Free: 855-493-9883 Fax: 641-753-4110

Conrad Location 103 E Center St, PO Box 400 Conrad, IA 50621-0400 Phone: 641-366-3898 Toll Free: 866-456-3898 Fax: 641-366-3895

Manchester Location 300 E. Main Street, PO Box 439 Manchester, IA 52057 Phone: 563-927-3814 Toll Free: 800-313-3814 Fax: 563-927-6741

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Meet Our Team

Since 1934, through the many ups and downs this state and country have faced, GNB has remained a strong and dependable friend and business partner in the community. See GNB for all of your banking and financial needs. Let our banking experts work for you.

Team listed alphabetically by branch.

• Grundy Center
• Conrad
• Marshalltown
• Manchester