Area code 320 is a telephone area code in the North American Numbering Plan for most of the central part of the U.S. state of Minnesota. It covers central Minnesota, except the Twin Cities region, and includes the cities of St. Cloud, Willmar, and Sartell. It was created in 1996 by carving out of the western part of area code 612, which originally stretched border-to-border from Wisconsin through the Twin Cities to South Dakota.