GNB Bank
Grundy Center, IA · State member commercial bank
Sonar Score
Strong
out of 100 · from public FDIC data
Reported June 30, 2026. The Sonar Score is an informational signal from public FDIC data — not a rating or financial advice.
Key figures
- Total assets
- $621.3M
- Total deposits
- $498M
- Branches
- 10
- Return on assets
- 1.68%
- Return on equity
- 13.37%
- Charter type
- State member commercial bank
- Established
- 1934
- FDIC cert #
- 14079
How the 88 breaks down
Well-capitalized by regulatory thresholds.
Strong returns on its asset base.
Efficient use of shareholder capital.
Community-scale institution.
Your deposits at GNB Bank
GNB Bank is an FDIC-insured institution (Cert #14079). Deposits are insured up to $250,000 per depositor, per ownership category, by the full faith and credit of the US government. Learn how to maximize your coverage →
10 branch locations
300 E Main St
Manchester, IA 52057
629 Broad St
Story City, IA 50248
103 E Center St
Conrad, IA 50621
103 E Center St
Conrad, IA 50621
725 Timberland Dr
Story City, IA 50248
315 Main St
Iowa Falls, IA 50126
2504 S 2nd St
Marshalltown, IA 50158
603 7th St
Grundy Center, IA 50638
529 G Ave
Grundy Center, IA 50638
308 Sherman Ave
Ackley, IA 50601
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