| # | Institution | Type | Branches | Deposits | Share |
|---|---|---|---|---|---|
| 1 | Bank of Prairie du Sac | Bank | 2 | $644.3M | 21.87% |
| 2 | Baraboo State Bank | Bank | 6 | $437.5M | 14.85% |
| 3 | Westby Co-Op Credit Union | Credit union | 5 | $350.9M* | 11.91% |
| 4 | BMO Bank National Association | Bank | 4 | $334.3M | 11.35% |
| 5 | Bank of Wisconsin Dells | Bank | 1 | $260.6M | 8.84% |
| 6 | The Peoples Community Bank | Bank | 2 | $132.5M | 4.50% |
| 7 | Summit Credit Union | Credit union | 1 | $120.2M* | 4.08% |
| 8 | Community First Bank | Bank | 2 | $114.2M | 3.88% |
| 9 | Associated Bank, National Association | Bank | 1 | $108.3M | 3.68% |
| 10 | Prevail Bank | Bank | 1 | $103.4M | 3.51% |
| 6 more institutions, year-over-year share and branch changes with Pro →$29/mo, cancel any time. | |||||
* Credit-union deposits are estimated (June total shares spread evenly across branches).
| Year | Deposits | Institutions | Branches | Leader | Top share | HHI |
|---|---|---|---|---|---|---|
| 2026 | $2.95B | 16 | 32 | Bank of Prairie du Sac | 21.9% | 1,151 |
| 2025 | $2.88B | 17 | 33 | Bank of Prairie du Sac | 19.2% | 1,040 |
| 2024 | $2.87B | 17 | 33 | Bank of Prairie du Sac | 17.5% | 980 |
| 2023 | $3.37B | 17 | 34 | Bank of Wisconsin Dells | 21.8% | 1,134 |
| 2022 | $3.45B | 17 | 34 | Bank of Wisconsin Dells | 20.1% | 1,063 |
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.