| # | Institution | Type | Branches | Deposits | Share |
|---|---|---|---|---|---|
| 1 | BankNorth | Bank | 2 | $98.5M | 37.57% |
| 2 | Old National Bank | Bank | 1 | $96.6M | 36.87% |
| 3 | Stock Growers Bank | Bank | 1 | $31.9M | 12.16% |
| 4 | Dakota Plains Credit Union | Credit union | 1 | $26.4M* | 10.08% |
| 5 | American Bank & Trust | Bank | 1 | $7.0M | 2.68% |
| 6 | Lisbon Farmers Union Credit Union | Credit union | 1 | $1.7M* | 0.64% |
* Credit-union deposits are estimated (June total shares spread evenly across branches).
| Year | Deposits | Institutions | Branches | Leader | Top share | HHI |
|---|---|---|---|---|---|---|
| 2025 | $262.1M | 6 | 7 | BankNorth | 37.6% | 3,028 |
| 2024 | $147.9M | 5 | 6 | BankNorth | 61.6% | 4,441 |
| 2023 | $150.3M | 4 | 5 | BankNorth | 61.2% | 4,457 |
| 2022 | $154.6M | 4 | 5 | BankNorth | 64.0% | 4,711 |
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.