Sources for General Statistics

Demographic profile of Westchester

FedStats (gateway to federal statistics)
See also these particular sources:
- Business Statistics (BLS)
- Consumer Expenditure Survey (BLS)
- Health Statistics (DHHS)

U.S. Census
- State Data Center Program

Chicago Metropolitan Agency for Planning (CMAP) - regional planning organization for the metropolican area. Click "DATA" on upper panel for statistics and projections.
See also:
MetroPulse - the Regional Indicators Project from CMAP and Chicago Community Trust

Two classic publications for statistics, now online too!
Statistical Abstracts of the United States - key statistics collected by all the agencies of the federal government. Tables include notes and links to original sources.

World Almanac - Almanacs are good sources for statistics from a variety of organizations, including international orgranizations. You will need a Westchester library card to access this.