This point shapefile represents the populations of the U.S. Census blocks as centroids for the United States. U.S. Census blocks nest within all other tabulated census geographic entities and are the basis for all tabulated data. This layer is part of the 2014 ESRI Data and Maps collection for ArcGIS 10.2. U.S. Census Block Centroid Populations provides population and other demographic information for each U.S. Census block centroid within the United States. U.S. Census Bureau. (2014). United States Census Block Centroid Populations, 2010. ESRI. Available at: http://purl.stanford.edu/yz681cp3302