Chick-fil-A is a U.S.-based fast-food chain founded in 1967 by S. Truett Cathy, specializing in chicken sandwiches and related menu items. Headquartered in Atlanta, Georgia, the company operates more than 3,000 restaurants across the United States. Known for its emphasis on customer service and its policy of closing on Sundays, Chick-fil-A has become one of the largest quick-service restaurant brands in the country, with a strong presence in both urban and suburban markets.