Summary File 3 (SF3)
SF3 contains approximately 5,300 Census 2000 variables
covering social, economic and household characteristics
compiled from a sample of approximately 19 million
housing units (about 1 in 6 households) that received
the Census 2000 long-form questionnaire.
Summary
File 1 (SF1)
SF1 contains 100-percent population and housing characteristics.