Bank · FDIC insured
GNB Bank
A $621.3M bank headquartered in Grundy Center, IA, with 7 branches in Iowa.
Rates
No Carrot Score yet: it needs scores for at least two of CDs, savings, auto loans and credit cards. CDs: no accounts of this kind found on its website. Savings: published rates need another account or activity, so they are not scored. Auto loans: no rates found on its website.
- Savings—2.27%Needs another account or monthly activitySavings rates →
Deposits are federally insured by the FDIC up to $250,000 per depositor.
About GNB Bank
GNB Bank is a locally and employee-owned community bank that has supported its local communities, families, businesses of all sizes, and local agriculture for more than 91 years.
- Headquarters
- 529 G Ave, Grundy Center, IA 50638
- FDIC certificate
- 14079 ↗
Branches
7 branches in Iowa
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Iowa
7 branches
Waterloo area · 2
- GNB BankMain office529 G Ave, Grundy Center, IA 50638Directions
- Conrad Office Branch103 E Center St, Conrad, IA 50621Directions
Ackley area · 1
- Ackley Branch308 Sherman Ave, Ackley, IA 50601Directions
Iowa Falls area · 1
- Iowa Falls Downtown Branch315 Main St, Iowa Falls, IA 50126Directions
Manchester area · 1
- Gnb Manchester Branch300 E Main St, Manchester, IA 52057Directions
Marshalltown area · 1
- Marshalltown Branch2504 S 2nd St, Marshalltown, IA 50158Directions
Ames area · 1
- Story City Office629 Broad St, Story City, IA 50248Directions
Walk-in offices from the FDIC directory as of September 4, 2026. Directions open Google Maps. A nearby branch doesn’t mean you can join or open an account.
Financial details
| Measure | This bank | Peers’ middle | Strongest quarter |
|---|---|---|---|
| CapitalLeverage ratio | 12.22% | 10.98% | 13.00% or more |
| Troubled loansNoncurrent | 0.62% | 0.42% | 0.09% or less |
| ProfitabilityReturn on assets | 1.68% | 1.24% | 1.68% or more |
| LendingLoans per $100 deposited | $90 | $81 | — |
- CapitalLeverage ratio12.22%Peers’ middle 10.98% · Top 25% 13.00%+
- Troubled loansNoncurrent0.62%Peers’ middle 0.42% · Top 25% ≤0.09%
- ProfitabilityReturn on assets1.68%Peers’ middle 1.24% · Top 25% 1.68%+
- LendingLoans per $100 deposited$90Peers’ middle $81
Compared with the 2,650 banks with $100 million to $1 billion in assets. The strongest quarter is what the best 25% of them reach: more capital and profit, fewer troubled loans. Lending has no better end.Troubled loans are noncurrent: 90 or more days late, or no longer earning interest.
Regulators’ own ratings of GNB Bank are confidential. These figures are what it reports to the FDIC each quarter, set beside its peers; they aren’t a rating.