GNB Bank branch locations
10 active branches in FDIC records across 1 state.
By state
Iowa10
Largest branches by deposits (2026)
- 529 G Ave, Grundy Center, IA$178M
- 300 E Main St, Manchester, IA$115M
- 308 Sherman Ave, Ackley, IA$61M
- 2504 S 2nd St, Marshalltown, IA$47M
- 629 Broad St, Story City, IA$37M
- 315 Main St, Iowa Falls, IA$35M
- 103 E Center St, Conrad, IA$25M
- 103 E Center St, Conrad, IA—
- 725 Timberland Dr, Story City, IA$0K
- 603 7th St, Grundy Center, IA$0K
Locations and branch deposits transcribed from FDIC BankFind Suite active-location records and the annual Summary of Deposits. Verify hours and services with the bank before visiting.