Branch Network
First Business Bank Locations & Branches Madison, Wisconsin
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First Business Bank operates 4 branches from its headquarters in Madison, WI, .
First Business Bank branch network
Its 4 branches span 2 states and 4 cities. The most are in WISCONSIN (3) and KANSAS (1). WISCONSIN holds 95.6% of its branch deposits. Its largest office by deposits is its main office in Madison, WI, with $2.85B (79.3% of its branch deposits). It had the same number of branches on June 30, 2025.
First Business Bank at a glance
Its CET1 capital ratio was 11.17% at Q2 2026, above regulatory requirements.
- Total assets, Q2 2026
- $4.41B
- CET1 ratio, Q2 2026
- 11.17%
- Deposit insurance
- FDIC
- Regulator
- FDIC
- Latest call report
- Q2 2026, FFIEC 041
- Established
- 1909
Full financial profile · Is First Business Bank safe? · First Business Bank call report · Routing number
Deposit market share
Share of all FDIC-insured deposits held in each area, from the June 30, 2026 Summary of Deposits. Rank 1 is the largest holder. Shares are by bank charter, not by holding company.
| Area | Rank | Deposit share | Deposits |
|---|---|---|---|
| City: Madison, WI (1 branch) | 1 of 18 | 19.5% | $2.85B |
| State: WI (3 branches) | 11 of 185 | 1.7% | $3.44B |
Ranked by total assets among banks headquartered in the state: Largest banks in Wisconsin.
Share by county and metro area
First Business Bank's share of FDIC-insured deposits in the counties and metro areas where it has branches, from the June 30, 2026 Summary of Deposits. Up to the ten largest of each are shown, by the bank's deposits. Rank 1 is the largest holder. Banks only: credit unions are not in the Summary of Deposits.
Counties
| County | Rank | Deposit share | Deposits | County total |
|---|---|---|---|---|
| Dane, WI (1 branch) | 2 of 33 | 10.9% | $2.85B | $26.10B |
| Waukesha, WI (1 branch) | 11 of 34 | 2.6% | $490.1M | $18.94B |
| Johnson, KS (1 branch) | 29 of 60 | 0.6% | $158.0M | $26.59B |
| Winnebago, WI (1 branch) | 10 of 17 | 3.6% | $94.8M | $2.64B |
Metro areas
| Metro area | Rank | Deposit share | Deposits | Metro total |
|---|---|---|---|---|
| Madison, WI (1 branch) | 3 of 41 | 9.5% | $2.85B | $30.15B |
| Milwaukee-Waukesha, WI (1 branch) | 21 of 43 | 0.6% | $490.1M | $79.93B |
| Kansas City, MO-KS (1 branch) | 60 of 114 | 0.2% | $158.0M | $98.85B |
| Oshkosh-Neenah, WI (1 branch) | 10 of 17 | 3.6% | $94.8M | $2.64B |
| Branch | Location | ZIP | Deposits |
|---|---|---|---|
| First Business Bank (main office) | Madison, WI | 53719 | $2.85B |
| Brookfield Branch | Brookfield, WI | 53045 | $490.1M |
| First Business Bank Branch | Leawood, KS | 66211 | $158.0M |
| First Business Bank (main office) | Appleton, WI | 54914 | $94.8M |
Source: FDIC Summary of Deposits, June 30, 2026. How the survey works.
Regulator records: FDIC BankFind (cert 15229) · FFIEC NIC profile (RSSD 537449)