The web site of the Bureau of the Census contains a wealth of information, from population statistics to economic surveys, both historical and current.
Some of the topics available are:
American Factfinder Allows searching by subject, coverage date, geographic area, and others.
Population Statistics on age, ancestry, marital status, language use, and a wide variety of other topics.
Maps Census Maps, School Districts, TIGER maps, Gazetteer
The American Community Survey (ACS) a survey conducted by the U.S. Census Bureau that provides accurate and up-to-date profiles of America's communities every year. Full implementation will begin in 2003. Sample areas are available (see Data Products in the Index), but New Jersey is not yet among them.
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