| # | Institution | Type | Branches | Deposits | Share |
|---|---|---|---|---|---|
| 1 | Stockman Bank of Montana | Bank | 1 | $112.1M | 50.36% |
| 2 | First Interstate Bank | Bank | 1 | $53.5M | 24.03% |
| 3 | Native American Bank, National Association | Bank | 1 | $31.1M | 13.98% |
| 4 | 1St Liberty Federal Credit Union | Credit union | 1 | $25.9M* | 11.63% |
* Credit-union deposits are estimated (June total shares spread evenly across branches).
| Year | Deposits | Institutions | Branches | Leader | Top share | HHI |
|---|---|---|---|---|---|---|
| 2025 | $222.5M | 4 | 4 | Stockman Bank of Montana | 50.4% | 3,444 |
| 2024 | $212.9M | 4 | 4 | Stockman Bank of Montana | 49.7% | 3,383 |
| 2023 | $229.2M | 4 | 4 | Stockman Bank of Montana | 52.5% | 3,611 |
| 2022 | $212.5M | 4 | 4 | Stockman Bank of Montana | 54.4% | 3,686 |
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.