Jack in the Box is an American fast-food restaurant chain founded in February 21, 1951, by Robert O. Peterson in San Diego, California, where it is headquartered. The chain has over 2,300 locations, primarily serving the West Coast of the United States. Restaurants are also found in selected large urban areas outside the West Coast, including Phoenix, Denver, Albuquerque, El Paso, Dallas-Fort Worth, Houston, Austin, San Antonio, Baton Rouge, Nashville, Charlotte, St. Louis, Indianapolis, and Cincinnati.
Jack in the Box is among the nation’s leading fast-food hamburger chains, with more than 2,300 quick-serve restaurants in 21 states and Guam. As the first major hamburger chain to develop and expand the concept of drive-thru dining, Jack in the Box has always emphasized on-the-go convenience, with approximately 85 percent of the half-billion guests served annually buying food at the drive-thru or for take-out. In addition to drive-thru windows, most restaurants have indoor dining areas and are open 18-24 hours a day.