Patelco Credit Union San Francisco-based Patelco Credit Union is one of the largest and most successful credit unions in the United States. We were charted in 1936 to serve the employees of Pacific Telephone and Telegraph Company, the organization from which the credit union derived its name. Patelco remained a telephone company credit union until 1983, at which time it expanded its field of membership to companies within the telecommunications and high technology industries, and professional service organizations. Now with over 220,000 members and over $4 billion in assets, we have become an industry leader in convenience and innovation. Patelco delivers service through its 39 branches and a nationwide network of ATMs and shared branches. | 
