The food industry includes agriculture, manufacturing, food processing, wholesale, food distribution, retail and more. Each take their place in a food supply chain that serves virtually every person in the U.S. In 2018, retail and food services were estimated to hold total sales of $6.02 trillion.* Competition within the retail sector exists between the grocery industry (fresh foods) and food service industry (prepared foods). Careers include agricultural science technicians, food technologists, research chefs and more.