| # | Institution | Type | Branches | Deposits | Share |
|---|---|---|---|---|---|
| 1 | CBI Bank & Trust | Bank | 4 | $439.9M | 29.86% |
| 2 | Nicolet National Bank | Bank | 4 | $394.8M | 26.79% |
| 3 | Community Bank and Trust Company | Bank | 3 | $219.5M | 14.90% |
| 4 | Members Community Credit Union | Credit union | 2 | $83.0M* | 5.63% |
| 5 | U.S. Bank National Association | Bank | 1 | $77.8M | 5.28% |
| 6 | South Ottumwa Savings Bank | Bank | 1 | $76.4M | 5.19% |
| 7 | Ascentra Credit Union | Credit union | 1 | $56.8M* | 3.86% |
| 8 | R.I.A. Federal Credit Union | Credit union | 1 | $53.2M* | 3.61% |
| 9 | DeWitt Bank & Trust Co. | Bank | 1 | $43.1M | 2.92% |
| 10 | The Family Credit Union | Credit union | 1 | $21.6M* | 1.47% |
| 1 more institutions, year-over-year share and branch changes with Pro →$29/mo, cancel any time. | |||||
* Credit-union deposits are estimated (June total shares spread evenly across branches).
| Year | Deposits | Institutions | Branches | Leader | Top share | HHI |
|---|---|---|---|---|---|---|
| 2026 | $1.47B | 11 | 20 | CBI Bank & Trust | 29.9% | 1,957 |
| 2025 | $1.41B | 11 | 20 | CBI Bank & Trust | 28.6% | 1,956 |
| 2024 | $1.32B | 11 | 20 | Midwestone Bank | 31.6% | 2,025 |
| 2023 | $1.37B | 11 | 20 | Midwestone Bank | 29.6% | 1,965 |
| 2022 | $1.39B | 11 | 20 | Midwestone Bank | 29.4% | 1,837 |
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.