The U.S. currently has 14 statistical areas that have been delineated by the Office of Management and Budget (OMB). On July 21, 2023, the OMB delineated two combined statistical areas, three metropolitan statistical areas, and nine micropolitan statistical areas in . As of 2023, the largest of these is the Sioux Falls, SD-MN MSA, comprising the area around the state's largest city of Sioux Falls.