The U.S. currently has 20 statistical areas that have been delineated by the Office of Management and Budget (OMB). On July 21, 2023, the OMB delineated four combined statistical areas, ten metropolitan statistical areas, and six micropolitan statistical areas in. As of 2023, the largest of these is the Greenville-Spartanburg-Anderson, SC CSA, comprising the area around Greenville in the state's Upcountry.

Table

Primary statistical areas

Primary statistical areas (PSAs) include all combined statistical areas and any core-based statistical area that is not a constituent of a combined statistical area. Of the 20 statistical areas of South Carolina, eight are PSAs comprising four combined statistical areas and four metropolitan statistical areas.