The U.S. currently has nine statistical areas that have been delineated by the Office of Management and Budget (OMB). On July 21, 2023, the OMB delineated one combined statistical area, four metropolitan statistical areas, and four micropolitan statistical areas in . As of 2023, the largest of these is the Fargo-Wahpeton, ND-MN CSA, comprising the area around Fargo, North Dakota's largest city.