TriCo Bancshares is a bank holding company. The Company's principal subsidiary is Tri Counties Bank, a California-chartered commercial bank (the Bank). The Bank offers banking services to retail customers and small to medium-sized businesses through 68 branch offices in Northern and Central California. As of December 31, 2016, the Bank was engaged in the general commercial banking business in 26 counties in Northern and Central California. The Bank operated from 58 traditional branches and 10 in-store branches, as of December 31, 2016. The Bank conducts a commercial banking business, including accepting demand, savings and time deposits and making commercial, real estate, and consumer loans. It also offers installment note collection, issues cashier's checks, sells travelers checks and provides safe deposit boxes and other customary banking services.