| # | Institution | Type | Branches | Deposits | Share |
|---|---|---|---|---|---|
| 1 | Bank of Bridger, National Association | Bank | 3 | $166.5M | 54.31% |
| 2 | First Interstate Bank | Bank | 1 | $86.4M | 28.19% |
| 3 | Altana Federal Credit Union | Credit union | 1 | $53.6M* | 17.50% |
* Credit-union deposits are estimated (June total shares spread evenly across branches).
| Year | Deposits | Institutions | Branches | Leader | Top share | HHI |
|---|---|---|---|---|---|---|
| 2026 | $306.5M | 3 | 5 | Bank of Bridger, National Association | 54.3% | 4,051 |
| 2025 | $316.7M | 3 | 5 | Bank of Bridger, National Association | 53.6% | 4,077 |
| 2024 | $299.3M | 3 | 5 | Bank of Bridger, National Association | 52.1% | 4,044 |
| 2023 | $319.1M | 3 | 5 | Bank of Bridger, National Association | 50.2% | 3,939 |
| 2022 | $395.2M | 3 | 5 | Bank of Bridger, National Association | 46.7% | 3,659 |
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.