First State Bank Address: 605 13th St N, Humboldt, IA 50548 Phone: (515) 604-6420 Banks, Loans Other Businesses: Bank Iowa at 1302 5th Ave N, Humboldt, IA 50548 US Bank at 701 Sumner Ave, Humboldt, IA 50548 Northwest Bank at 801 Sumner Ave, Humboldt, IA 50548 Bank Iowa at 506 Sumner Ave, Humboldt, IA 50548