FDIC-insured bank
United Business Bank — Walnut Creek, CA
Bank headquartered in Walnut Creek, California, part of BAYCOM CORP.
Source: FDIC BankFind Suite, data as of June 30, 2026, fetched September 5, 2026
Headquarters and contact
| Address | 500 Ygnacio Valley Rd Walnut Creek, CA 94596 |
| County | Contra Costa |
| Metro area | San Francisco-Oakland-Berkeley, CA |
| Website | www.unitedbusinessbank.com |
| Phone | not published in FDIC data, see the bank's website |
FDIC record
| FDIC Certificate | 57716 |
| Federal Reserve RSSD ID | 3281510 |
| Status | Active |
| Charter class | SM (STATE) |
| Holding company | BAYCOM CORP |
| Domestic offices | 34 |
| Financials as of | June 30, 2026 |
How to find your United Business Bank routing number
FDIC does not publish ABA routing numbers, and many banks use different routing numbers by state or by account type. The reliable places to find yours: the bottom left of a check from this bank, the "account details" screen in its online banking, or its official website at www.unitedbusinessbank.com.
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Offices nearest to headquarters
| United Business Bank main office Walnut Creek, CA |
500 Ygnacio Valley Rd, 94596 |
| Castro Valley Branch Castro Valley, CA |
3895 E Castro Valley Blvd, 94552 |
| Oakland Branch Oakland, CA |
100 Hegenberger Rd, 94621 |
| Pleasanton Branch Pleasanton, CA |
465 Main St, 94566 |
| San Francisco Branch San Francisco, CA |
121 Spear St, 94105 |
| Livermore Branch Livermore, CA |
2300 1st St, 94550 |
| Mountain View Branch Mountain View, CA |
700 E El Camino Real, 94040 |
| San Jose Branch San Jose, CA |
2550 N 1st St, 95131 |
| Stockton Branch Stockton, CA |
22 W Yokuts Ave, 95207 |
| Waterloo Branch Stockton, CA |
4426 E. State Highway 88 On Waterloo Road, 95215 |
| Sacramento Branch Sacramento, CA |
3001 I St, 95816 |
| Los Angeles Branch Los Angeles, CA |
3333 Wilshire Blvd, 90010 |
34 offices in total. Browse them by city through the state pages.
Where United Business Bank has offices
Cities with the most United Business Bank offices
Other banks headquartered in Walnut Creek
| Mechanics Bank | $21.25 billion |
| Pacific Coast Bankers' Bank | $1.21 billion |
Largest banks headquartered elsewhere in California
| City National Bank Los Angeles | $99.10 billion |
| East West Bank Pasadena | $84.32 billion |
| Banc of California Los Angeles | $34.90 billion |
| Axos Bank San Diego | $28.87 billion |
| Cathay Bank Los Angeles | $24.64 billion |
| Citizens Business Bank, National Association Ontario | $21.18 billion |
| Bank of Hope Los Angeles | $18.99 billion |
| Bank of America California, National Association San Francisco | $14.81 billion |
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