Culver Franchising System, LLC (Culver's) is an American fast-casual restaurant chain. The company was founded in 1984 by George, Ruth, Craig, and Lea Culver. The first location opened in Sauk City, Wisconsin on July 18, 1984 under the name "Culver's Frozen Custard and ButterBurgers." The privately held company is headquartered in Prairie du Sac, Wisconsin. The chain operates primarily in the Midwestern United States, and has a total of 893 restaurants in 26 states. Culver's menu is mostly known for its butter burgers and frozen custard, but also offers cheese curds, chicken, fish, and salads.