| # | Institution | Type | Branches | Deposits | Share |
|---|---|---|---|---|---|
| 1 | CUSB Bank | Bank | 2 | $386.5M | 67.75% |
| 2 | Decorah Bank & Trust Company | Bank | 1 | $134.2M | 23.53% |
| 3 | Security State Bank | Bank | 1 | $38.5M | 6.75% |
| 4 | Citizens Savings Bank | Bank | 1 | $11.2M | 1.97% |
| Year | Deposits | Institutions | Branches | Leader | Top share | HHI |
|---|---|---|---|---|---|---|
| 2025 | $570.4M | 4 | 5 | CUSB Bank | 67.8% | 5,193 |
| 2024 | $520.0M | 4 | 5 | CUSB Bank | 66.9% | 5,108 |
| 2023 | $470.2M | 4 | 5 | CUSB Bank | 70.3% | 5,395 |
| 2022 | $478.3M | 4 | 5 | CUSB Bank | 66.9% | 5,085 |
Every institution above links to its profile — ratios, peer medians and this quarter’s change signals. Pro adds the full table, share movement and CSV export.