Bank of the Sierra was founded in 1977. Over the years, our market has expanded to include Tulare, Kern, Kings, Fresno, Los A ... ngeles, San Luis Obispo, Santa Barbara and Ventura Counties. We are the largest community bank headquartered in California's Heartland. Through sound banking practices and financial strength, the bank has enjoyed unprecedented growth during its history. Member FDIC. Equal Housing Lender. read more