| # | Institution | Type | Branches | Deposits | Share |
|---|---|---|---|---|---|
| 1 | Farmers State Bank | Bank | 2 | $163.7M | 31.02% |
| 2 | Merchants State Bank | Bank | 1 | $94.1M | 17.82% |
| 3 | Campbell County Bank, Inc. | Bank | 1 | $63.2M | 11.96% |
| 4 | CorTrust Bank National Association | Bank | 1 | $61.0M | 11.56% |
| 5 | First Dakota National Bank | Bank | 1 | $42.5M | 8.05% |
| 6 | BankWest, Inc. | Bank | 1 | $40.3M | 7.63% |
| 7 | First Interstate Bank | Bank | 1 | $38.2M | 7.23% |
| 8 | Explorers Federal Credit Union | Credit union | 1 | $25.0M* | 4.73% |
* Credit-union deposits are estimated (June total shares spread evenly across branches).
| Year | Deposits | Institutions | Branches | Leader | Top share | HHI |
|---|---|---|---|---|---|---|
| 2026 | $527.9M | 8 | 9 | Farmers State Bank | 31.0% | 1,754 |
| 2025 | $491.8M | 8 | 9 | Farmers State Bank | 33.0% | 1,835 |
| 2024 | $486.8M | 8 | 9 | Farmers State Bank | 32.6% | 1,841 |
| 2023 | $500.5M | 8 | 9 | Farmers State Bank | 34.1% | 1,889 |
| 2022 | $506.3M | 8 | 9 | Farmers State Bank | 33.2% | 1,898 |
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.