| # | Institution | Type | Branches | Deposits | Share |
|---|---|---|---|---|---|
| 1 | Commercial State Bank, of Wagner | Bank | 1 | $218.8M | 42.96% |
| 2 | First Fidelity Bank | Bank | 1 | $110.4M | 21.69% |
| 3 | First Dakota National Bank | Bank | 1 | $61.4M | 12.06% |
| 4 | BankWest, Inc. | Bank | 1 | $35.2M | 6.91% |
| 5 | BMO Bank National Association | Bank | 1 | $34.9M | 6.86% |
| 6 | Ft Randall Federal Credit Union | Credit union | 2 | $24.3M* | 4.77% |
| 7 | Andes State Bank | Bank | 1 | $24.2M | 4.75% |
* Credit-union deposits are estimated (June total shares spread evenly across branches).
| Year | Deposits | Institutions | Branches | Leader | Top share | HHI |
|---|---|---|---|---|---|---|
| 2026 | $509.2M | 7 | 8 | Commercial State Bank, of Wagner | 43.0% | 2,602 |
| 2025 | $483.5M | 7 | 8 | Commercial State Bank, of Wagner | 45.8% | 2,727 |
| 2024 | $471.8M | 7 | 8 | Commercial State Bank, of Wagner | 48.0% | 2,863 |
| 2023 | $464.8M | 7 | 8 | Commercial State Bank, of Wagner | 46.6% | 2,755 |
| 2022 | $491.2M | 7 | 8 | Commercial State Bank, of Wagner | 44.2% | 2,629 |
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.