#How to get this data?
##American Communities Survey (US Census)
###Organized Tables can be generated by zip code at https://www.census tract. HUD has a tool to convert between gov/acs/www/data/data-tables-and-tools/##US Census Economic data###https://www.census tract and .gov/econ/geo-zip code.html
###Census tracts seem to be smaller than zip codes particularly in urban areas, so this might be a more precise unit of data
###Problem: it may be difficult (or impossible) to determine census tract for VC, Fortune 500, and Medical Centers.
##US Census Economic data###https://wwwOrganized by census tract.HUD has a tool to convert between census.gov/econ/geo-tract and zipcode.html
##McNair Center data on Medical Centers, Hubs, and Accelerators
#Chronology