Data.census.gov provides statistics on U. S. population, housing, economic and geographic information.
Bureau of Labor Statistics is the principal fact-finding agency for the Federal Government in the broad field of labor economics and statistics.
Bureau of Justice Statistics Primary source for United States criminal justice statistics. Provides statistical reports on many aspects of crime and criminal justice, including capital punishment, prisons, drunk driving, probation, police departments, and victims of crime.
National Center for Education Statistics (NCES) collects, analyzes and makes available data related to education in the U.S. and other nations.
Sourcebook of Criminal Justice Statistics Contains statistical data on criminal justice systems, numbers of criminal offenses and reports of victims of crimes, etc.
Statistical Analysis Centers (Justice Research and Statistics Association) Links to specific criminal justice-related data sets at the state level.
USA.gov - Data and Statistics. Links to government statistics and data by topic.