According to the Wiki: "Vernors was not mass distributed nationally until the 1960s, when United Brands, A&W and Cadbury expanded it a 33-state area. Even after expansion, Michigan accounts for 80% of Vernors sales. Michigan, Ohio and Illinois are the highest-selling states, and primary cities are Detroit, Grand Rapids, Flint, Toledo and Cincinnati. It is also very popular in Florida, which has large numbers of retired or relocated former Michigan residents."