| # | Institution | Type | Branches | Deposits | Share |
|---|---|---|---|---|---|
| 1 | Co-Op Credit Union | Credit union | 4 | $219.3M* | 48.67% |
| 2 | Security Financial Bank | Bank | 3 | $125.9M | 27.95% |
| 3 | Black River Country Bank | Bank | 2 | $85.2M | 18.92% |
| 4 | Waumandee State Bank | Bank | 1 | $20.1M | 4.46% |
* Credit-union deposits are estimated (June total shares spread evenly across branches).
| Year | Deposits | Institutions | Branches | Leader | Top share | HHI |
|---|---|---|---|---|---|---|
| 2026 | $450.5M | 4 | 10 | Co-Op Credit Union | 48.7% | 3,528 |
| 2025 | $455.1M | 4 | 10 | Co-Op Credit Union | 48.9% | 3,573 |
| 2024 | $459.1M | 4 | 10 | Co-Op Credit Union | 51.7% | 3,694 |
| 2023 | $504.2M | 4 | 10 | Co-Op Credit Union | 54.4% | 3,912 |
| 2022 | $544.3M | 4 | 10 | Co-Op Credit Union | 50.4% | 3,733 |
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.