| # | Institution | Type | Branches | Deposits | Share |
|---|---|---|---|---|---|
| 1 | Stockman Bank of Montana | Bank | 3 | $690.7M | 70.68% |
| 2 | First Interstate Bank | Bank | 1 | $159.7M | 16.34% |
| 3 | U.S. Bank National Association | Bank | 1 | $63.7M | 6.52% |
| 4 | Valley Financial Credit Union | Credit union | 1 | $44.3M* | 4.53% |
| 5 | Community 1St Federal Credit Union | Credit union | 1 | $18.8M* | 1.93% |
* Credit-union deposits are estimated (June total shares spread evenly across branches).
| Year | Deposits | Institutions | Branches | Leader | Top share | HHI |
|---|---|---|---|---|---|---|
| 2026 | $977.1M | 5 | 7 | Stockman Bank of Montana | 70.7% | 5,329 |
| 2025 | $902.4M | 5 | 7 | Stockman Bank of Montana | 69.9% | 5,233 |
| 2024 | $853.0M | 5 | 7 | Stockman Bank of Montana | 68.4% | 5,074 |
| 2023 | $846.3M | 5 | 7 | Stockman Bank of Montana | 70.5% | 5,328 |
| 2022 | $829.5M | 4 | 6 | Stockman Bank of Montana | 72.4% | 5,679 |
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.