These are free and comprehensive data sources available on the web.

For a comprehensive list of economic data sources, see Rutgers University
For some special data sources, try:

Economic:

• Bureau of Economic Analysis: Comprehensive source for GDP, trade, regional data and more
• Bureau of Labor Statistics: The source for labor market data such as the unemployment rate, as well as data on inflation
• Economics Statistics Briefing Room of the White House: An excellent source for the latest economic indicators
• Economagic.com: Another comprehensive source for most major economic time series data

Demographic:

• American Community Survey (Census Bureau)
• American Factfinder (Census Bureau): An interactive access to the Economic Census, Census 2000, American Community Survey, and more

Education:

• National Center for Education Statistics: This is the main federal organization for collecting and analyzing education data.
• New Jersey Department of Education: DOE data