Statistical Abstract of the United States
The US Census Bureau offers this exhaustive compendium of national, regional, state, local, and selected international statistics drawn from "reports and records of government and private agencies."
U.S. Census Bureau
The official site for census information including data on mobility, education, income, poverty levels, trends, immigration, fertility rates and more.
Bureau of Justice Statistics
Find statistics on the justice system, such as crime rates/trends, law enforcement data and corrections stats.
Bureau of Labor Statistics
This site offers current information on labor and financial demographics including The Current Population Survey, regional Economic Indicators, the Monthly Labor Review and Consumer Price Index (two-month lag).
County and City Data Books The electronic versions of the County and City Data Books from 1988, 1994 and 2000.
Easy access to current Federal economic indicators provided by the U.S. Census Bureau.
Organizes the statistical reports of 70 federal agencies by subject. Good place to begin when you don't know where to start looking for demographic information.
United States Historical Census Data Browser
Contains data for each state and county from 1790 to 1970.
Combines the numerous UN statistical databases into one entry point. The numerous databases, tables and glossaries containing over 60 million data points cover a wide range of themes including Agriculture, Crime, Education, Employment, Energy, Environment, Health, HIV/AIDS, Human Development, Industry, Information and Communication Technology, National Accounts, Population, Refugees, Tourism, Trade, as well as the Millennium Development Goals indicators.