| # | Institution | Type | Branches | Deposits | Share |
|---|---|---|---|---|---|
| 1 | American Bank & Trust | Bank | 2 | $177.7M | 50.63% |
| 2 | Citizens State Bank, of Arlington | Bank | 1 | $83.4M | 23.76% |
| 3 | Dakotaland Federal Credit Union | Credit union | 1 | $49.6M* | 14.13% |
| 4 | First National Bank | Bank | 1 | $20.2M | 5.75% |
| 5 | First National Bank | Bank | 1 | $15.4M | 4.38% |
| 6 | CorTrust Bank National Association | Bank | 1 | $4.7M | 1.34% |
* Credit-union deposits are estimated (June total shares spread evenly across branches).
| Year | Deposits | Institutions | Branches | Leader | Top share | HHI |
|---|---|---|---|---|---|---|
| 2026 | $350.9M | 6 | 7 | American Bank & Trust | 50.6% | 3,382 |
| 2025 | $337.0M | 6 | 7 | American Bank & Trust | 49.9% | 3,328 |
| 2024 | $312.1M | 6 | 7 | American Bank & Trust | 51.3% | 3,380 |
| 2023 | $317.5M | 6 | 7 | American Bank & Trust | 48.6% | 3,182 |
| 2022 | $319.0M | 6 | 7 | American Bank & Trust | 48.9% | 3,197 |
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.