| # | Institution | Type | Branches | Deposits | Share |
|---|---|---|---|---|---|
| 1 | Stockman Bank of Montana | Bank | 3 | $543.2M | 19.43% |
| 2 | First Interstate Bank | Bank | 3 | $482.0M | 17.24% |
| 3 | U.S. Bank National Association | Bank | 3 | $380.8M | 13.62% |
| 4 | Montana Federal Credit Union | Credit union | 4 | $308.3M* | 11.03% |
| 5 | Wells Fargo Bank, National Association | Bank | 2 | $304.5M | 10.89% |
| 6 | Horizon Credit Union | Credit union | 2 | $112.8M* | 4.03% |
| 7 | 1St Liberty Federal Credit Union | Credit union | 4 | $103.5M* | 3.70% |
| 8 | Bravera Bank | Bank | 2 | $99.4M | 3.55% |
| 9 | Citizens Alliance Bank | Bank | 2 | $98.8M | 3.53% |
| 10 | Clearwater Federal Credit Union | Credit union | 1 | $81.3M* | 2.91% |
| 8 more institutions, year-over-year share and branch changes with Pro →$29/mo, cancel any time. | |||||
* Credit-union deposits are estimated (June total shares spread evenly across branches).
| Year | Deposits | Institutions | Branches | Leader | Top share | HHI |
|---|---|---|---|---|---|---|
| 2025 | $2.80B | 18 | 36 | Stockman Bank of Montana | 19.4% | 1,183 |
| 2024 | $2.69B | 18 | 35 | First Interstate Bank | 19.4% | 1,232 |
| 2023 | $2.74B | 18 | 33 | First Interstate Bank | 19.1% | 1,243 |
| 2022 | $2.67B | 15 | 29 | First Interstate Bank | 21.3% | 1,466 |
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.