The U.S. Census Bureau has placed a very useful research tool on the internet. “My congressional district” lets anyone choose any particular U.S. House district. Then, one can see a small map of that district, and click on links to know population characteristics for that district. That includes sex, age categories, race and ethnicity, ancestry, percentage of veterans in the district’s population, percentage of disabled individuals, how many moved into the district in the last year and where they moved from, data on employment, housing, income, and education. Thanks to Doug Hess for the link.