| # | Institution | Type | Branches | Deposits | Share |
|---|---|---|---|---|---|
| 1 | Pioneer Bank & Trust | Bank | 1 | $178.8M | 46.42% |
| 2 | First Interstate Bank | Bank | 1 | $89.5M | 23.24% |
| 3 | Highmark Federal Credit Union | Credit union | 1 | $46.8M* | 12.16% |
| 4 | First National Bank | Bank | 1 | $39.6M | 10.28% |
| 5 | Northern Hills Federal Credit Union | Credit union | 1 | $30.4M* | 7.90% |
* Credit-union deposits are estimated (June total shares spread evenly across branches).
| Year | Deposits | Institutions | Branches | Leader | Top share | HHI |
|---|---|---|---|---|---|---|
| 2025 | $385.2M | 5 | 5 | Pioneer Bank & Trust | 46.4% | 3,011 |
| 2024 | $371.2M | 5 | 5 | Pioneer Bank & Trust | 45.6% | 3,003 |
| 2023 | $398.9M | 5 | 5 | Pioneer Bank & Trust | 42.9% | 2,854 |
| 2022 | $419.4M | 5 | 5 | Pioneer Bank & Trust | 48.0% | 3,124 |
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.