Core-Mark Holding Company, Inc., together with its subsidiaries, engages in the business of distributing packaged consumer products to convenience retail stores in the United States and Canada. It distributes approximately 42,000 stock keeping units of packaged consumable goods, including cigarettes, tobacco products, candy, snacks, fast food, fresh products, groceries, dairy, non-alcoholic beverages, general merchandise, and health and beauty care products. The company also serves grocery stores, drug stores, liquor stores, and other stores that carry convenience products. As of March 12, 2010, it provided distribution and logistics services, as well as marketing programs to approximately 24,000 retail locations in 50 states, and 5 Canadian provinces through 26 distribution centers. The company was founded in 1888 and is headquartered in South San Francisco, California.