Topologically Integrated Geographic Encoding and Referencing system (TIGER)

  • Collected by Census Bureau every ten years or so
  • Contains lines and polygons of most relevant features
  • Often inaccurate and incomplete, but at least it's there
  • You can map street maps with it
  • You can build a pretty good street address geocoder with it
  • It's a HUGE amount of data
  • Available at http://www.census.gov/geo/www/tiger/
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