The U.S. State of Missouri currently has 32 statistical areas that have been delineated by the Office of Management and Budget (OMB). On July 21, 2023, the OMB delineated six combined statistical areas, eight metropolitan statistical areas, and 18 micropolitan statistical areas in Missouri. As of 2023, the largest of these is the St. Louis-St. Charles-Farmington, MO-IL CSA, comprising the area around St. Louis.