Thank you for purchasing the zip code demographic shapefile. Your purchse helps support our work here and it is very much appreciated. This shapefile is derived from the latest 2010 U.S. Census data and is based on Census Tiger/Line shapefiles. Metadata can be found at the link below. There is an MS Excel file in each zip file that relates the short data table name of the demographic profile data element to its full name. For example, "DP0010001" is the short name for the data table containing total population. The attribute table for each shapefile contains the short names for each data element. Metadata for 5-Digit ZIP Code Tabulation Area (ZCTA5) shapefiles is located at: https://mapcruzin.com/zip-code-demographic-shapefiles/tl_2012_us_zcta510.shp.xml To learn more about GIS, check http://www.learn2map.com for a free GIS tutorial and atlas. Free GIS software is available at: https://mapcruzin.com/free-gis-software-tools.htm Free GIS shapefiles are available at: https://mapcruzin.com/download-free-arcgis-shapefiles.htm Soon we will be adding the most recent demographic data and also new shapefiles including zipcode, census tract, census block and many more. Consider visiting our blog http://mapcruzin.blogspot.com for current information. Visit MapCruzin.com and signup for updates. Thanks again, Mike Meusesr https://mapcruzin.com