Description: U.S. Tracts represents the U.S. Census tracts of the United States in the 50 states and the District of Columbia. It includes over 1,600 demographic attributes from ESRI Community Data. This data set provides three feature classes. The base feature class is called esri_tract and isn't generalized. The weighted centroids feature class is called esri_tract_1. The centroids are weighted by the U.S. Block Centroids population distribution. Use the weighted centroids in report aggregation and spatial overlay operations. The generalized boundaries feature class is called esri_tract_2. Use the generalized boundaries when creating study areas.