County banking markets / WI / 55079
MilwaukeeWisconsin
FIPS 55079. Branch offices reported to the FDIC Summary of Deposits, June 30 of each survey year, 1994–2025. One of 72 counties in Wisconsin’s 2025 survey.
Concentration, 1994–2025
Branch-count HHI squares each institution’s share of the county’s branch offices; deposit HHI squares its share of county deposits. The bands are the 2010 Horizontal Merger Guidelines classification, the dashed line the 1,800 level above which the Federal Reserve reviews a merger centrally. In 2025 this market is unconcentrated on branches (710) and highly concentrated on deposits (2,555).
Source: FDIC Summary of Deposits | DOJ & FTC, Horizontal Merger Guidelines (2010), section 5.3 | Federal Reserve, Competitive Effects of Mergers and Acquisitions FAQs Both indices computed from the SOD branch rows for this county, June 30 of each survey year. Neither is the Fed's screen HHI: no thrift weighting, no exclusion of specialty and internet banks, no central-booking adjustment. Methodology
Branches and institutions
266 branch offices and 51 institutions in 1994; 207 and 28 in 2025. Deposits booked in the county went from $13.65B to $52.27B, nominal.
Source: FDIC Summary of Deposits FDIC Summary of Deposits, June 30 of each survey year, 1994-2025. Methodology
Who holds the deposits, 2025
Every institution with a branch in the county, ranked by deposits booked here. Both shares are shown because they are the two indices above: squaring and summing the deposit column gives the deposit HHI, the branch column the branch-count HHI.
| # | Institution | Deposits | Deposit share | Branches | Branch share |
|---|---|---|---|---|---|
| 1 | U.S. Bank National Association cert 6548 | $24.04B | 45.99% | 19 | 9.18% |
| 2 | BMO Bank National Association cert 16571 | $6.76B | 12.94% | 28 | 13.53% |
| 3 | JPMorgan Chase Bank, National Association cert 628 | $5.81B | 11.11% | 16 | 7.73% |
| 4 | Associated Bank, National Association cert 5296 | $5.71B | 10.92% | 18 | 8.70% |
| 5 | Tri City National Bank cert 18922 | $1.15B | 2.21% | 19 | 9.18% |
| 6 | PNC Bank, National Association cert 6384 | $1.14B | 2.18% | 16 | 7.73% |
| 7 | Old National Bank cert 3832 | $1.01B | 1.94% | 5 | 2.42% |
| 8 | Wells Fargo Bank, National Association cert 3511 | $1.01B | 1.93% | 7 | 3.38% |
| 9 | WaterStone Bank, SSB cert 28513 | $938.1M | 1.79% | 11 | 5.31% |
| 10 | Johnson Bank cert 20296 | $806.6M | 1.54% | 4 | 1.93% |
| 11 | Town Bank, National Association cert 34717 | $756.5M | 1.45% | 8 | 3.86% |
| 12 | North Shore Bank cert 28679 | $716.8M | 1.37% | 16 | 7.73% |
| 13 | The Huntington National Bank cert 6560 | $535.0M | 1.02% | 9 | 4.35% |
| 14 | CIBC Bank USA cert 33306 | $520.7M | 1.00% | 1 | 0.48% |
| 15 | PyraMax Bank, FSB cert 29120 | $266.5M | 0.51% | 3 | 1.45% |
| 16 | The Equitable Bank, S.S.B. cert 28614 | $219.6M | 0.42% | 4 | 1.93% |
| 17 | First-Citizens Bank & Trust Company cert 11063 | $210.2M | 0.40% | 4 | 1.93% |
| 18 | Great Midwest Bank, S.S.B. cert 29657 | $173.0M | 0.33% | 4 | 1.93% |
| 19 | The Northern Trust Company cert 913 | $114.8M | 0.22% | 1 | 0.48% |
| 20 | First Federal Bank of Wisconsin cert 30422 | $78.2M | 0.15% | 4 | 1.93% |
| 21 | UMB Bank, National Association cert 8273 | $65.0M | 0.12% | 1 | 0.48% |
| 22 | Byline Bank cert 20624 | $61.9M | 0.12% | 1 | 0.48% |
| 23 | Northwestern Mutual Wealth Management cert 57093 | $50.5M | 0.10% | 1 | 0.48% |
| 24 | Peoples State Bank cert 18569 | $41.6M | 0.08% | 2 | 0.97% |
| 25 | Bank Five Nine cert 12517 | $31.7M | 0.06% | 2 | 0.97% |
| 26 | Columbia Savings and Loan Association cert 28480 | $21.5M | 0.04% | 1 | 0.48% |
| 27 | Ixonia Bank cert 12514 | $18.1M | 0.03% | 1 | 0.48% |
| 28 | Horicon Bank cert 11236 | $10.3M | 0.02% | 1 | 0.48% |
Source: FDIC Summary of Deposits June 30, 2025. Branch rows grouped by FDIC certificate; names as reported to the survey. Deposit share is n/a where the county's total SOD deposits are zero. Methodology
Back to county banking markets, up to Wisconsin, or read the methodology for the two HHI constructions and what they cannot tell you.