Geolytics Neighborhood Change Database (NCDB) 1970-2010 provides access to selected variables from the 1970 to 2010 Censuses at the nation, state, county, or census tract levels.
Where available, normalized time-series data can be accessed in Census 2010 tract boundaries. Download data as a CSV, DBF, MapInfo file, or shapefile. Maximum of 5 simultaneous users.