Union Bank of California, N.A. The Uboc (Union Bank of California) offers online banking and online business banking service for their customers.Below are the customer care service details

Official website: www.unionbank.com

Address: 400 California St. San Francisco, CA 94104
Phone Numbers: (415) 765-3434
Fax: (415) 765-3507
Email: cbsonlinebanking@unionbank.com (for customer enquiry)

General Contact Information : 1-800-238-4486

Investor Relations :  1-415-765-2969