| # | Institution | Type | Branches | Deposits | Share |
|---|---|---|---|---|---|
| 1 | Marion County State Bank | Bank | 5 | $550.2M | 47.62% |
| 2 | Leighton State Bank | Bank | 2 | $151.7M | 13.13% |
| 3 | Wells Fargo Bank, National Association | Bank | 1 | $113.8M | 9.85% |
| 4 | U.S. Bank National Association | Bank | 1 | $80.4M | 6.96% |
| 5 | Community 1St Credit Union | Credit union | 2 | $77.9M* | 6.74% |
| 6 | Peoples Savings Bank | Bank | 2 | $68.5M | 5.93% |
| 7 | Twin Cedars Bank | Bank | 1 | $37.7M | 3.26% |
| 8 | Bank Iowa | Bank | 1 | $36.3M | 3.14% |
| 9 | Great Southern Bank | Bank | 1 | $24.6M | 2.13% |
| 10 | Washington State Bank | Bank | 1 | $14.3M | 1.24% |
* Credit-union deposits are estimated (June total shares spread evenly across branches).
| Year | Deposits | Institutions | Branches | Leader | Top share | HHI |
|---|---|---|---|---|---|---|
| 2025 | $1.16B | 10 | 17 | Marion County State Bank | 47.6% | 2,693 |
| 2024 | $1.11B | 9 | 16 | Marion County State Bank | 49.5% | 2,891 |
| 2023 | $1.10B | 9 | 15 | Marion County State Bank | 49.7% | 2,910 |
| 2022 | $1.14B | 8 | 14 | Marion County State Bank | 52.7% | 3,179 |
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.