The United States federal government defines and delineates the nation's metropolitan areas for statistical purposes, using a set of standard statistical area definitions. the U.S. Office of Management and Budget (OMB) defined and delineated 393 metropolitan statistical areas (MSAs) and 542 micropolitan statistical areas (μSAs) in the United States and Puerto Rico. Many of these 935 MSAs and μSAs are, in turn, components of larger combined statistical areas (CSAs) consisting of adjacent MSAs and μSAs that are linked by commuting ties; 582 metropolitan and micropolitan areas are components of the 184 defined CSAs.
Metropolitan and micropolitan statistical areas are defined as consisting of one or more adjacent counties or county equivalents with at least one urban core area meeting relevant population thresholds, plus adjacent territory that has a high degree of social and economic integration with the core, as measured by commuting ties. A metropolitan statistical area has at least one core with a population of at least 50,000. In a micropolitan statistical area, the largest core has a population of at least 10,000 but less than 50,000.
Maps
Types and distribution The sortable table below shows the number of combined, metropolitan and micropolitan statistical areas in each of the U.S. states, the District of Columbia, and Puerto Rico as of 2023. For each jurisdiction, it lists: Total number of delineated areas wholly or partially in the named jurisdiction The number of CSAs wholly or partially in the jurisdiction The number of core-based statistical areas (i.e., MSAs and μSAs) wholly or partially in the jurisdiction The number of MSAs wholly or partially in the jurisdiction The number of μSAs wholly or partially in the jurisdiction
+Number of statistical areas in the United States and Puerto RicoJurisdictionDelineated areasCSAsCore-based areasMSAsμSAsAlabamaThis state shares one or more statistical areas with one or more other states.359261313Alaska40422Arizona1321174Arkansas25421714California427352510Colorado20317710Connecticut92752Delaware41321Florida35728226Georgia467391524Hawaii40422Idaho22517710Illinois4714331221Indiana5010401525Iowa31724915Kansas25322715Kentucky32824915Louisiana25619109Maine51431Maryland1331064Massachusetts1221073Michigan438351619Minnesota34628919Mississippi27621417Missouri31625718Montana70752Nebraska1631349Nevada102835New Hampshire82624New Jersey93660New Mexico19217413New York347271314North Carolina489391524North Dakota91844Ohio5511441529Oklahoma28622517Oregon24420812Pennsylvania4812362016Rhode Island21110South Carolina20416106South Dakota1421239Tennessee347271017Texas8013672641Utah1211156Vermont82615Virginia19415114Washington296231310West Virginia20515105Wisconsin4011291514Wyoming1001028District of ColumbiaThe District of Columbia shares both its statistical areas with nearby states.21110United States1106181925387538Puerto Rico1331064United States & Puerto Rico1119184935393542
See also
United States of America Outline of the United States Demographics of the United States United States Census Bureau List of U.S. states and territories by population List of United States cities by population List of U.S. cities by adjusted per capita personal income List of United States counties and county equivalents United States Office of Management and Budget Statistical area (United States) Combined statistical area Core-based statistical area (list) Metropolitan statistical area Micropolitan statistical area
Notes
References
External links
United States Government United States Census Bureau 2010 United States Census USCB population estimates United States Office of Management and Budget