Chat Contact Us Location & Hours 319-824-5431 Grundy Center, IA Change Location Change Preferred Location 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 Personal Business & Ag Trust Resources About Us Online Accounts PAUSE 1 2 Download our new mobile app! Search GNB Bank Mobile Banking in your app store for on-the-go banking convenience. Learn More Previous Next Go Club Your Adventure Awaits GNB Insurance Explore our Solutions GNB Real Estate Start Your Property Search Investments Plan your Future Today Get Your Dream Home Home Loans Home Loans Helping Farmers & Ag Operations Ag Loans Ag Loans Manage Your Finances Personal Checking Accounts Personal Checking Accounts Our Community Impact "Some of my favs! Always fixing - always helpful - always feel their smiles through the phone!" Malena GNB Customer "They are the BEST!" Linda and Greg GNB Customers "Great seeing your smile at the drive up window!" Sonja GNB Customer 300 Number of Organizations Donated to since 2017 $250,000+ Invested in Communities Since 2017 1050 Community Hours Donated by Staff CUSTOMER SERVICE Support Online Tech Support Lost/Stolen Debit Card Business Hours: 800-545-0172 Non Business Hours: 800-383-8000 Lost/Stolen Credit Card Business Hours: 800-545-0172 Non Business Hours: 800-423-7503 Routing # 073905064 PERSONAL Checking Savings eServices Home Loans Personal Loans BUSINESS & AG Business Checking Small Business Services Cash Management Agricultural Loans Business Loans TRUST Trust Services Farm Management Trust FAQs RESOURCES Calculators Lost/Stolen Card Mobile Banking FAQs Online Banking FAQs Security Tips ABOUT US Why GNB Bank? Staff Careers Facebook Icon Youtube Icon LinkedIn Icon © 2021 GNB Bank. All rights reserved. Web solutions provided by VGM Forbin. Privacy Policy | Security Policy | Statement of Condition | Kasasa Cycle Dates | Website Accessibility Notice | Patriot Act External link to equal housing lender website External link to FDIC website Aa Aa Aa