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Metropolitan statistical area

An area consisting of a core county or counties in which lies an urban area having a population of at least 50,000, plus adjacent counties having a high degree of social and economic integration with the core counties as measured through commuting ties.

Counties contained in micropolitan statistical areas are nonmetropolitan.

When the local area personal income* and GDP by metropolitan area statistics are updated, the most current delineations available from the Office of Management and Budget (OMB) are carried through the entire time series.

*Real Personal Income are estimated for the most current delineations available from the Office of Management and Budget (OMB) and carried through the entire time series for as many regions as possible. Combining metropolitan areas with the U.S. nonmetropolitan portion provides complete coverage of all U.S. counties.

For more information on how metropolitan areas are delineated, see The Census Bureau.

A list of metropolitan areas and component counties is available.