U.S. Department of Commerce, U.S. Census Bureau, Geography DivisionThe TIGER/Line Shapefiles are an extract of selected geographic and cartographic information from the Census MAF/TIGER database. The Census MAF/TIGER database represents a seamless national file with no overlaps or gaps between parts. However, each TIGER/Line Shapefile is designed to stand alone as an independent data set or the shapefiles can be combined to cover the whole nation.ArcGIS DynamicMapLayerhttps://hub.arcgis.com/datasets/cc80ef2cd9cd47b6a831c54a58540af2_51engOpen Data DCPublicCensus Block Groups in 2010 [District of Columbia--Washington]Web servicesDistrict of Columbia--WashingtonDistrict of Columbia2010