Old vs. new urban: U.S. national mapping of the year of “first development” for urban areas, from 1940-2010.
This product is a 100-meter resolution raster which classifies urban lands in the conterminous United States by the year in which they were “first developed.”  The classification is based on housing density by era for 1940-2010 developed by the University of Wisconsin-Madison SILVIS lab.  The classification was …