What is what area code is 320?

Area code 320 is a telephone area code in the North American Numbering Plan (NANP) for parts of the U.S. state of Minnesota. It covers cities and communities such as St. Cloud, Alexandria, Willmar, and Hutchinson. Area code 320 was created in 1996 as an overlay to area code 612. It serves a large portion of central Minnesota and is currently overlaid by area code 612.