United States micropolitan area

United States Micropolitan Statistical Areas (μSA), as defined by the Census Bureau and the Office of Management and Budget, are urban areas in the United States based around a core city or town with a population of 10,000 to 49,999. The micropolitan area designation was created in 2003. Like the better-known metropolitan area, a micropolitan area is a geographic entity used for statistical purposes based on counties and county-equivalents [1]. The bureau has identified 578 such areas in the nation.
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