| # | Institution | Type | Branches | Deposits | Share |
|---|---|---|---|---|---|
| 1 | CUSB Bank | Bank | 2 | $397.3M | 66.91% |
| 2 | Decorah Bank & Trust Company | Bank | 1 | $142.1M | 23.93% |
| 3 | Security State Bank | Bank | 1 | $41.0M | 6.91% |
| 4 | Citizens Savings Bank | Bank | 1 | $13.3M | 2.25% |
| Year | Deposits | Institutions | Branches | Leader | Top share | HHI |
|---|---|---|---|---|---|---|
| 2026 | $593.8M | 4 | 5 | CUSB Bank | 66.9% | 5,102 |
| 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.