http://tags.library.upenn.edu/tag/stats+gis PennTags Feed http://tags.library.upenn.edu/makerecord/ered/24323 http://tags.library.upenn.edu/makerecord/ered/24323 <div class="mlacite">The Social Explorer produces maps and reports of US Census Tract level data from 1940-2000. Using high quality maps and data, they make available the full contents of the tract data for the United States for the full period. The data can also be exported as excel spreadsheets for easy reuse.<br /></div> http://tags.library.upenn.edu/makerecord/url/3750 http://tags.library.upenn.edu/makerecord/url/3750 The US Census provides thematic maps at various levels of geography and for many data points.<br /> http://tags.library.upenn.edu/makerecord/url/3733 http://tags.library.upenn.edu/makerecord/url/3733 The map images as well as the satellite imagery belong to Google and are pulled from maps.google.com. The data is extracted from the 2000 United States Census and can be downloaded from www.census.gov.