1970's Land use data refined with 1990 population data to indicate new residential development for the conterminous United States
This data set represents U.S. Geological Survey (USGS)
historical Land Use and Land Cover (LULC) from the 1970's that
has been refined with 1990 population density at the block group
level to indicate new residential development representative of
the 1990's.  Any area having a population density of at least
1,000 …