Census Tracts are small, relatively permanent statistical subdivisions of a county or equivalent entity that are updated by local participants prior to each decennial census...

A census block is the smallest geographic unit used by the United States Census Bureau for tabulation of 100-percent data (data collected from all houses, rather than a...

  Building Outlines Derived From 1999 Digital Orthophotos. Delineates building rooflines. Data tables contain peak elevations & building type. The 1999 Bldg data includes...