| # | Institution | Type | Branches | Deposits | Share |
|---|---|---|---|---|---|
| 1 | First Bank & Trust | Bank | 5 | $1.50B | 64.05% |
| 2 | BankStar Financial | Bank | 3 | $302.1M | 12.90% |
| 3 | Wells Fargo Bank, National Association | Bank | 1 | $138.8M | 5.93% |
| 4 | Dacotah Bank | Bank | 1 | $115.8M | 4.95% |
| 5 | Dakotaland Federal Credit Union | Credit union | 2 | $99.2M* | 4.23% |
| 6 | Central Bank | Bank | 1 | $88.0M | 3.76% |
| 7 | Richland State Bank | Bank | 1 | $44.7M | 1.91% |
| 8 | First Interstate Bank | Bank | 1 | $27.3M | 1.17% |
| 9 | Citizens State Bank, of Arlington | Bank | 1 | $25.9M | 1.11% |
* Credit-union deposits are estimated (June total shares spread evenly across branches).
| Year | Deposits | Institutions | Branches | Leader | Top share | HHI |
|---|---|---|---|---|---|---|
| 2026 | $2.34B | 9 | 16 | First Bank & Trust | 64.0% | 4,367 |
| 2025 | $2.25B | 9 | 16 | First Bank & Trust | 64.7% | 4,433 |
| 2024 | $2.22B | 9 | 16 | First Bank & Trust | 65.5% | 4,516 |
| 2023 | $2.35B | 9 | 16 | First Bank & Trust | 68.8% | 4,905 |
| 2022 | $2.01B | 9 | 16 | First Bank & Trust | 64.7% | 4,419 |
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.