Total Assets
$621.3M
Total Deposits
$498.0M
Branches
11
Established
1934
GNB Bank is a bank headquartered in Grundy Center, Iowa, established in 1934. It holds $621.3M in total assets across 11 branch locations. In our editorial opinion, based on public FDIC/NCUA data, GNB Bank earns a TFS Financial Health Grade of A (88.5/100) — our editorial assessment, not an official rating or financial advice.
TFS Health Grade
88.5 / 100
Excellent financial health
How we gradeTFS Health Grades are our editorial opinion based on public FDIC/NCUA data — not an official rating, not financial advice.
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Financial data through June 30, 2026. Updated by TFS August 28, 2026. Data sourced from FDIC BankFind Suite as of 2026-Q2. This data is provided by the federal government and is believed to be accurate, but TheFinanceSection.com cannot guarantee its completeness or timeliness.
Data sourced from CFPB Consumer Complaint Database. This data is provided by the federal government and is believed to be accurate, but TheFinanceSection.com cannot guarantee its completeness or timeliness.
| Branch | Address | City | State | Type |
|---|---|---|---|---|
| GNB BankHQ | 529 G Ave | Grundy Center | IA | 11 |
| GNB Bank | 650 Main St | Ackley | IA | 11 |
| GNB Bank | 103 E Center St | Conrad | IA | 27 |
| GNB Bank | 103 E Center St | Conrad | IA | 11 |
| GNB Bank | 408 Front St | Geneva | IA | 11 |
| GNB Bank | 603 7th St | Grundy Center | IA | 21 |
| GNB Bank | 315 Main St | Iowa Falls | IA | 11 |
| GNB Bank | 300 E Main St | Manchester | IA | 11 |
| GNB Bank | 2504 S 2nd St | Marshalltown | IA | 11 |
| GNB Bank | 725 Timberland Dr | Story City | IA | 29 |
| GNB Bank | 629 Broad St | Story City | IA | 11 |
Data sourced from FDIC BankFind Suite. This data is provided by the federal government and is believed to be accurate, but TheFinanceSection.com cannot guarantee its completeness or timeliness.
Data sourced from FDIC Enforcement Decisions and Orders / NCUA. This data is provided by the federal government and is believed to be accurate, but TheFinanceSection.com cannot guarantee its completeness or timeliness.
TFS Financial Health Grades represent our editorial assessment based on publicly available data and our proprietary methodology. They do not represent financial advice or an official government rating. Data on this page is sourced from federal government databases and is believed to be accurate.
Benchmarked against 60 active, federally insured banks reporting in the same quarter and holding roughly 0.5×–2× its assets. Same-state and overlapping-market peers are prioritized.
TFS health score
88.5
Tier 1 capital ratio
12.22%
Return on assets
1.68%
Non-performing loans
0.62%
Efficiency ratio
63.16%
Asset growth (YoY)
-0.87%
Suggested direct comparisons
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Complaint percentiles are intentionally withheld while TFS audits CFPB company matching and import coverage. Peer conclusions use complete same-quarter regulatory metrics only.