Lists · Deposits by county
Waukesha County, WI Bank Deposit Market Share
BMO Bank N.A. holds the largest share of deposits in Waukesha County, WI, 11.9%, followed by Town Bank, N.A. (11.1%) and JPMorgan Chase Bank, N.A. (9.7%). 34 institutions hold $18.94B at 148 offices as of June 30, 2026.
| # | Institution | Deposits | Market share | Share change from 2025 |
|---|---|---|---|---|
| 1 | BMO Bank N.A. | $2.24B | 11.85% | — |
| 2 | Town Bank, N.A. | $2.11B | 11.14% | — |
| 3 | JPMorgan Chase Bank, N.A. | $1.84B | 9.74% | — |
| 4 | Associated Bank, N.A. | $1.78B | 9.40% | — |
| 5 | U.S. Bank N.A. | $1.55B | 8.21% | — |
| 6 | Bank Five Nine | $1.50B | 7.90% | — |
| 7 | Waukesha State Bank | $1.29B | 6.81% | — |
| 8 | Citizens Bank | $895.3M | 4.73% | — |
| 9 | North Shore Bank | $580.3M | 3.06% | — |
| 10 | Old National Bank | $550.3M | 2.91% | — |
| 11 | First Business Bank | $490.1M | 2.59% | — |
| 12 | PNC Bank, N.A. | $413.4M | 2.18% | — |
| 13 | Waterstone Bank | $397.4M | 2.10% | — |
| 14 | Great Midwest Bank, State Savings Bank | $383.5M | 2.03% | — |
| 15 | Tri City National Bank | $368.1M | 1.94% | — |
| 16 | Wells Fargo Bank, N.A. | $351.1M | 1.85% | — |
| 17 | Spring Bank | $332.3M | 1.75% | — |
| 18 | First-Citizens Bank & Trust Company | $313.0M | 1.65% | — |
| 19 | Westbury Bank | $177.4M | 0.94% | — |
| 20 | Cibm Bank | $175.2M | 0.93% | — |
| 21 | National Exchange Bank and Trust | $151.8M | 0.80% | — |
| 22 | Johnson Bank | $141.1M | 0.75% | — |
| 23 | Ixonia Bank | $133.2M | 0.70% | — |
| 24 | Pyramax Bank, F.S.B. | $128.7M | 0.68% | — |
| 25 | First Federal Bank of Wisconsin | $125.0M | 0.66% | — |
| 26 | Horicon Bank | $91.3M | 0.48% | — |
| 27 | The Huntington National Bank | $89.1M | 0.47% | — |
| 28 | Alerus Financial, N.A. | $76.9M | 0.41% | — |
| 29 | Peoples State Bank | $75.7M | 0.40% | — |
| 30 | Collins State Bank | $68.0M | 0.36% | — |
| 31 | State Bank of Chilton | $47.2M | 0.25% | — |
| 32 | The Equitable Bank, S.S.B. | $35.2M | 0.19% | — |
| 33 | Bank CMG | $15.4M | 0.08% | — |
| 34 | Marathon Bank | $13.1M | 0.07% | — |
About this list
Deposits are those held at each institution's offices in Waukesha County as of June 30, 2026, from the FDIC Summary of Deposits, whatever state the institution is headquartered in. Market share is the institution's deposits divided by all deposits in the market. Shares are by bank charter, not rolled up to the holding company, and cover FDIC-insured institutions only, so credit unions are not included. Each office is placed in its county and metro area by the FDIC branch directory; the few offices the directory does not list are left out of the market and of every share.
The change from 2025 is not shown for this market: some offices that closed during the year cannot be placed in a single county or metro area, and they hold enough deposits to move the comparison. The 2026 shares are complete.
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