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::List of metropolitan areas of the United States

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{{#invoke:Sidebar|sidebar}} {{#invoke:main|main}} The two sortable tables below list the metropolitan and micropolitan areas of the United States and Puerto Rico for the 929 Core-Based Statistical Areas (CBSAs)<ref name=CBSA>The United States Office of Management and Budget (OMB) defines a Core-Based Statistical Area (CBSA) as one or more adjacent counties or county equivalents that have at least one urban core area of at least 10,000 population, plus adjacent territory that has a high degree of social and economic integration with the core as measured by commuting ties.</ref> defined by the Office of Management and Budget (OMB).<ref name=OMB_13-01>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref>

The OMB defines statistical areas for the metropolitan and micropolitan areas of the United States and Puerto Rico. Most recently on February 28, 2013, the OMB defined 1098 statistical areas for the United States and Puerto Rico.<ref name=OMB_13-01/> These 1098 statistical areas comprise 929 Core Based Statistical Areas (CBSAs)<ref name=CBSA/> and 169 Combined Statistical Areas (CSAs).<ref name=CSA>The United States Office of Management and Budget (OMB) defines a Combined Statistical Area (CSA) as an aggregate of adjacent Core Based Statistical Areas that are linked by commuting ties.</ref> The 929 Core Based Statistical Areas are divided into 388 Metropolitan Statistical Areas (MSAs – 381 for the U.S. and seven for Puerto Rico)<ref name=MSA>The United States Office of Management and Budget (OMB) defines a Metropolitan Statistical Area (MSA) as a Core Based Statistical Area having at least one urban cluster of at least 50,000 population, plus adjacent territory that has a high degree of social and economic integration with the core as measured by commuting ties.</ref> and 541 Micropolitan Statistical Areas (µSAs – 536 for the U.S. and five for Puerto Rico).<ref name="µSA">The United States Office of Management and Budget (OMB) defines a Micropolitan Statistical Area (µSA) as a Core Based Statistical Area having at least one urban cluster of at least 10,000 but less than 50,000 population, plus adjacent territory that has a high degree of social and economic integration with the core as measured by commuting ties.</ref> The 169 Combined Statistical Areas (166 for the U.S. and three for Puerto Rico) each comprise two or more adjacent Core Based Statistical Areas.


List of metropolitan areas of the United States sections
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