Digital Maps and Geospatial Data | Princeton University

This polygon shapefile contains core based statistical areas in the United States and Puerto Rico. The map layer was created from the CENSUS 2010 TIGER/Line files produced by the U.S. Census Bureau. Core Based Statistical Areas (CBSAs) comprise both Metropolitan and Micropolitan Statistical Areas. CBSAs are defined by the Office of Management and Budget (OMB) and consist of the county, counties, or equivalent entities associated with at least one urban core (urbanized area or urban cluster) having a population of at least 10,000. Adjacent counties having a high degree of social and economic integration with the core as measured through commuting ties with the counties containing the core are included as part of a CBSA. There are two categories of CBSAs: Metropolitan Statistical Areas are CBSAs associated with at least one urbanized area that has a population of at least 50,000. The metropolitan statistical area comprises the central county or counties or equivalent entities containing the core, plus adjacent outlying counties having a high degree of social and economic integration with the central county or counties as measured through commuting. Micropolitan Statistical Areas are CBSAs associated with at least one urban cluster that has a population of at least 10,000 but less than 50,000. The micropolitan statistical area comprises the central county or counties or equivalent entities containing the core, plus adjacent outlying counties having a high degree of social and economic integration with the central county or counties as measured through commuting. The CBSAs for the 2010 Census are those defined by OMB and published in December 2009. This layer is part of the 1997-2014 edition of the National Atlas of the United States. These data are intended for geographic display and analysis at the national level, and for large regional areas. The data should be displayed and analyzed at scales appropriate for 1:1,000,000-scale data. No responsibility is assumed by the National Atlas of the United States in the use of these data. National Atlas of the United States. (2013). 1:1,000,000-Scale Core Based Statistical Areas, 2013. National Atlas of the United States. Available at: http://purl.stanford.edu/bn076jc5300. Information about National Atlas Web services can be found on the Web Map and Web Feature Services page; see <http://nationalatlas.gov/infodocs/webservices.html>. None. Acknowledgment of The National Atlas of the United States of America would be appreciated in products derived from these data. This layer is presented in the WGS84 coordinate system for web display purposes. Downloadable data are provided in native coordinate system or projection.