http://tags.library.upenn.edu/tag/census+data+gis PennTags Feed http://tags.library.upenn.edu/makerecord/url/40195 http://tags.library.upenn.edu/makerecord/url/40195 http://tags.library.upenn.edu/makerecord/url/29864 http://tags.library.upenn.edu/makerecord/url/29864 <p>Shapefiles and data at the census tract, county, state, and other geographic levels going back to 1790 for counties, and 1910 for tracts. Also includes some data for downloading.</p> http://tags.library.upenn.edu/makerecord/url/20150 http://tags.library.upenn.edu/makerecord/url/20150 Shapefiles and data at the census tract, county, state, and other geographic levels going back to 1790 for counties, and 1910 for tracts. Also includes some data for downloading. 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.