The United States Office of Management and Budget (OMB) has defined 925 core-based statistical areas (CBSAs) for the United States and 10 for Puerto Rico. The OMB defines a core-based statistical area 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. The 935 core-based statistical areas currently defined by the OMB include the 393 metropolitan statistical areas (MSAs), which have an urban core population of at least 50,000, and the 542 micropolitan statistical areas (μSAs), which have an urban core population of at least 10,000 but less than 50,000.

United States

The following sortable table lists the 925 core-based statistical areas (CBSAs) of the United States with the following information: See the distribution of statistical areas for the number of core-based statistical areas by state.

Puerto Rico

The following sortable table lists the 10 core-based statistical areas (CBSAs) of Puerto Rico with the following information: