To provide information on China's population and agricultural economy from the 1990 census, and geocoded 1990 China county boundary GIS data at 1:1M.

To provide access to demographic data for the U.S.

To provide population and housing data for the U.S.

To provide street intersection data for each county in the U.S.

To provide population and housing data for the U.S.

To provide county and state boundary data for the U.S.

To provide population and housing data for the U.S.

To provide demographic data for the U.S.

To provide an authoritative boundary layer for the geographies associated with the Public Use Micro Sample (PUMS) data files.

To provide access to demographic data for the U.S.

To provide migration data at the county and state levels for the U.S.

To provide time-series population data for Mexico for conducting assessments of human interactions with the environment.

To provide geographically referenced population data for Mexico for conducting assessments of human interactions with the environment.

To provide an urban place GIS coverage of Mexico.

To provide raster based GIS coverage of Mexican population for data integration.

To provide US housing and related data for demographic analysis; The samples can be extended to analysis of the whole United States for many purposes. Comparative analysis across different groups is possible using the PUMS data.