| # | Institution | Type | Branches | Deposits | Share |
|---|---|---|---|---|---|
| 1 | Farmers State Bank | Bank | 2 | $162.1M | 32.97% |
| 2 | Merchants State Bank | Bank | 1 | $86.6M | 17.61% |
| 3 | CorTrust Bank National Association | Bank | 1 | $55.7M | 11.33% |
| 4 | Campbell County Bank, Inc. | Bank | 1 | $54.3M | 11.04% |
| 5 | First Dakota National Bank | Bank | 1 | $37.7M | 7.66% |
| 6 | First Interstate Bank | Bank | 1 | $35.8M | 7.28% |
| 7 | BankWest, Inc. | Bank | 1 | $35.6M | 7.24% |
| 8 | Explorers Federal Credit Union | Credit union | 1 | $23.9M* | 4.87% |
* Credit-union deposits are estimated (June total shares spread evenly across branches).
| Year | Deposits | Institutions | Branches | Leader | Top share | HHI |
|---|---|---|---|---|---|---|
| 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 | $500.8M | 8 | 9 | Farmers State Bank | 34.1% | 1,887 |
| 2022 | $506.6M | 8 | 9 | Farmers State Bank | 33.2% | 1,896 |
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.