| # | Institution | Type | Branches | Deposits | Share |
|---|---|---|---|---|---|
| 1 | Westby Co-Op Credit Union | Credit union | 3 | $210.5M* | 23.33% |
| 2 | One Community Bank | Bank | 3 | $181.6M | 20.12% |
| 3 | Citizens First Bank | Bank | 1 | $144.6M | 16.02% |
| 4 | River Bank | Bank | 4 | $113.9M | 12.62% |
| 5 | Peoples State Bank | Bank | 1 | $69.8M | 7.73% |
| 6 | Bank of Ontario | Bank | 3 | $67.4M | 7.47% |
| 7 | Royal Bank | Bank | 2 | $67.1M | 7.44% |
| 8 | Associated Bank, National Association | Bank | 1 | $47.5M | 5.26% |
* Credit-union deposits are estimated (June total shares spread evenly across branches).
| Year | Deposits | Institutions | Branches | Leader | Top share | HHI |
|---|---|---|---|---|---|---|
| 2026 | $902.5M | 8 | 18 | Westby Co-Op Credit Union | 23.3% | 1,564 |
| 2025 | $866.0M | 8 | 18 | Westby Co-Op Credit Union | 22.9% | 1,580 |
| 2024 | $823.6M | 8 | 19 | Westby Co-Op Credit Union | 22.9% | 1,638 |
| 2023 | $819.1M | 8 | 18 | Westby Co-Op Credit Union | 28.0% | 1,705 |
| 2022 | $848.5M | 8 | 18 | Westby Co-Op Credit Union | 27.1% | 1,711 |
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.