CensusCD 2000/Long Form includes such categories of variables as income, housing, employment, language spoken, ancestry, education, poverty, monthly rent/mortgage, commute to work, etc. It contains about 16,000 variables at the tract, zip code level and above and about 5,500 variables at the Block Group level. For a complete list of variables, click here. The data set will include all of the cross-tabulated variables (income by age, employment by race) released by the US Census Bureau.