| # | Institution | Type | Branches | Deposits | Share |
|---|---|---|---|---|---|
| 1 | Iowa State Bank and Trust Company of Fairfield, Iowa | Bank | 1 | $226.9M | 32.16% |
| 2 | Nicolet National Bank | Bank | 1 | $202.5M | 28.70% |
| 3 | The Libertyville Savings Bank | Bank | 2 | $152.2M | 21.57% |
| 4 | Pilot Grove Savings Bank | Bank | 2 | $65.2M | 9.24% |
| 5 | Community 1St Credit Union | Credit union | 1 | $40.9M* | 5.80% |
| 6 | Washington State Bank | Bank | 1 | $17.9M | 2.54% |
* Credit-union deposits are estimated (June total shares spread evenly across branches).
| Year | Deposits | Institutions | Branches | Leader | Top share | HHI |
|---|---|---|---|---|---|---|
| 2026 | $705.5M | 6 | 8 | Iowa State Bank and Trust Company of Fairfield, Iowa | 32.2% | 2,449 |
| 2025 | $691.3M | 6 | 8 | Midwestone Bank | 29.8% | 2,435 |
| 2024 | $644.2M | 6 | 8 | Midwestone Bank | 31.0% | 2,459 |
| 2023 | $668.3M | 6 | 8 | Midwestone Bank | 33.9% | 2,476 |
| 2022 | $705.2M | 6 | 10 | Midwestone Bank | 36.5% | 2,553 |
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.