The U.S. State of Oklahoma currently has 28 statistical areas that have been delineated by the Office of Management and Budget (OMB). On March 6, 2020, the OMB delineated six combined statistical areas, five metropolitan statistical areas, and 17 micropolitan statistical areas in Oklahoma. As of 2023, the largest of these is the Oklahoma City-Shawnee, OK CSA, comprising the area around Oklahoma City, Oklahoma's capital and largest city.