Five Guys is a fast casual restaurant chain focused on hamburgers, hot dogs, and French fries, with its headquarters in the Lorton community in unincorporated Fairfax County, Virginia. The first Five Guys restaurant opened in 1986 in Arlington County, Virginia, and between 1986 and 2001, the chain expanded to five locations scattered through the Washington, D.C. metro area.
In early 2003, the chain began franchising, opening the doors to rapid expansion. In a year and a half, permits had been sold for over 300 franchised locations. As of 2012, Five Guys has over 1,000 locations open throughout the United States and Canada and over 1500 locations under development. The company is the fastest-growing fast food chain in the United States, with a 32.8% sales increase from 2010 to 2011. (Wikipedia)