GNB Bank Address: 603 7th St, Grundy Center, IA 50638 Phone: (319) 824-5431 Hours: Mon: 8am-4:30pm Tue: 8am-4:30pm Wed: 8am-4:30pm Thu: 8am-4:30pm Fri: 8am-4:30pm Sat: 8am-12pm Banks Other Businesses: Whink Services Inc at 805 G Ave, Grundy Center, IA 50638 Americinn at 2101 Commerce Dr, Grundy Center, IA 50638 Americinn at 621 G Ave, Grundy Center, IA 50638 Tasty House Kitchen at 611 G Ave, Grundy Center, IA 50638 Green Belt Bank & Trust at 508 G Ave, Grundy Center, IA 50638