| # | Institution | Type | Branches | Deposits | Share |
|---|---|---|---|---|---|
| 1 | The Port Washington State Bank | Bank | 8 | $926.9M | 23.09% |
| 2 | BMO Bank National Association | Bank | 5 | $740.2M | 18.44% |
| 3 | Associated Bank, National Association | Bank | 3 | $397.6M | 9.90% |
| 4 | U.S. Bank National Association | Bank | 3 | $371.8M | 9.26% |
| 5 | Landmark Credit Union | Credit union | 2 | $349.9M* | 8.72% |
| 6 | JPMorgan Chase Bank, National Association | Bank | 3 | $183.0M | 4.56% |
| 7 | Bank First, N.A. | Bank | 1 | $180.3M | 4.49% |
| 8 | Bank Five Nine | Bank | 2 | $165.1M | 4.11% |
| 9 | Wells Fargo Bank, National Association | Bank | 1 | $141.9M | 3.53% |
| 10 | Kohler Credit Union | Credit union | 3 | $141.9M* | 3.53% |
| 8 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 | $4.01B | 18 | 40 | The Port Washington State Bank | 23.1% | 1,236 |
| 2025 | $3.83B | 18 | 38 | The Port Washington State Bank | 22.3% | 1,238 |
| 2024 | $3.70B | 17 | 37 | The Port Washington State Bank | 22.1% | 1,277 |
| 2023 | $3.81B | 17 | 39 | The Port Washington State Bank | 21.3% | 1,199 |
| 2022 | $4.03B | 17 | 41 | The Port Washington State Bank | 20.9% | 1,170 |
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.