| # | Institution | Type | Branches | Deposits | Share |
|---|---|---|---|---|---|
| 1 | Commercial State Bank, of Wagner | Bank | 1 | $221.2M | 45.76% |
| 2 | First Fidelity Bank | Bank | 1 | $91.0M | 18.83% |
| 3 | First Dakota National Bank | Bank | 1 | $53.6M | 11.09% |
| 4 | BMO Bank National Association | Bank | 1 | $38.7M | 8.00% |
| 5 | BankWest, Inc. | Bank | 1 | $32.2M | 6.65% |
| 6 | Andes State Bank | Bank | 1 | $23.5M | 4.87% |
| 7 | Ft Randall Federal Credit Union | Credit union | 2 | $23.3M* | 4.81% |
* Credit-union deposits are estimated (June total shares spread evenly across branches).
| Year | Deposits | Institutions | Branches | Leader | Top share | HHI |
|---|---|---|---|---|---|---|
| 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 | $465.4M | 7 | 8 | Commercial State Bank, of Wagner | 46.5% | 2,750 |
| 2022 | $454.9M | 6 | 7 | Commercial State Bank, of Wagner | 47.7% | 3,001 |
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.