Sierra Bancorp operates as the bank holding company for Bank of the Sierra that provides retail and commercial banking services to individuals and businesses in California.

It accepts various deposit products, such as checking accounts, savings accounts, money market demand accounts, time deposits, retirement accounts, and sweep accounts.

The company's loan products include agricultural, commercial, consumer, real estate, construction, and mortgage loans.

It also offers automated teller machines; electronic point-of-sale payment alternatives; online and automated telephone banking services; and remote deposit capture and automated payroll services for business customers.

The company was founded in 1977 and is headquartered in Porterville, California.