To provide populated place (point) data with consistent population estimates.

To provide the ATSDR polygon data set of hazardous waste sites in the United States, Puerto Rico, and other territories which can be used to identify nearby populations and assess their potential risk.

To provide tabular data on environmental conditions (elevations, climate, coastal) in which people reside.

To provide estimates of urban and rural populations and land areas in the low elevation coastal zone.

To provide gridded demographic data, including characteristics of age, race, ethnicity, and housing, for the United States and Puerto Rico for data integration.

To provide gridded demographic data, including characteristics of income, education, and housing, for metropolitan statistical areas at a finer resolution than is available in the 30 arc-second grids used for the United States as a whole.

To provide gridded demographic data, including characteristics of income, education, and housing, for the United States and Puerto Rico for data integration.

To provide gridded demographic data, including characteristics of age, race, ethnicity, and housing, for metropolitan statistical areas at a finer resolution than is available in the 30 arc-second grids used for the United States as a whole.

To provide a time series of raster data on population to facilitate data integration.

To provide a time series of raster data on population projected to the year 2015 to facilitate data integration.

To provide a time series of raster data on population projected to the year 2015 to facilitate data integration.

To provide a time series of raster data on population density to facilitate data integration.

To provide a gridded data on country-level population and downscaled projections based on the SRES B2 marker scenario.