It doesn’t get simpler, faster and friendlier than 1st United Credit Union. As one of the first credit unions in California, ... 1st United Credit Union was founded in 1932 and has been thriving in the San Francisco East Bay Area ever since. We believe in local, neighborly banking and hope you will too. Membership is available to anyone who lives, works, or attends school in Alameda, Contra Costa, San Joaquin, Solano, Stanislaus, or Kings Counties in California. For more information, visit www.1stunitedcu.org. read more