Ask the question: What organization or agency would likely collect this data?
Government Agencies? Government Agencies collect data at all levels to aid policy decisions. It is generally distributed free via the internet. Organizations ? Larger data sets are generally available in SPSS, Excel, SAS or Stata formats.
Repository of over 35 billion datapoints from over 450 databases sourced from 70 public and private organizations. Searchable by keyword, subject and source. The datasets permit correlation of multiple, diverse indicators, with tools to interpret and visualize the data. Data available from 1948 - present.
Statistics on population, work, health, education, elections, industry, and economics. Some back to 1790, up through 2004. Most data updated by the Census Bureau web site. Can create custom tables which can also be downloaded, printed, or graphed.