Since opening its first branch in January 1978, Bank of the Sierra has grown to become the largest independent bank in the southern San Joaquin Valley, with over $2.5 billion in assets. The Bank is a multi-community financial institution that offers a full range of retail and commercial banking services, employing over 500 people at 40 branches, including an online branch, an ag credit center, and an SBA center. Offering more than just financial services, Bank of the Sierra is committed to providing the benefits of local banking with a focus on improving the communities in which it serves. Member FDIC. Equal Opportunity Lender.