Metropolitan Statistical Area (MSA) / Metropolitan Division (MD) (MSA)

An area that has at least one urbanized area of 50,000 or more population, plus adjacent territory that has a high degree of social and economic integration with the core as measured by commuting ties. If the specified criteria are met, a metropolitan statistical area containing a single core with a population of 2.5 million or more may be subdivided to form smaller groupings of counties referred to as metropolitan divisions. This is a five-digit code defined by the Office of Management and Budget. Those properties located outside of an MSA/MD should be coded as "NA" for not applicable.