The mission of BJS is "to collect, analyze, publish, and disseminate information on crime, criminal offenders, victims of crime, and the operation of justice systems at all levels of government. These data are critical to federal, state, and local policymakers in combating crime and ensuring that justice is both efficient and evenhanded."
"A trusted source for federal statistical information since 1997. FedStats supports a community of practice for over 100 agencies engaged in the production and dissemination of official federal statistics, and provides the public with a showcase of information, tools and news related to official Federal statistics."
Census records are kept by the US Census Bureau. Records include not just population counts, but also data on business, economic, educational, employment, family, health, housing, and income among Americans.