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GIS: Geospatial & Numeric Data

National Datasets


 National Datasets

Center for International Earth Science Information Network (CIESIN)
ICPSR: U.S. Census Data

Environmental Protection Agency

National Historic Geographic Information Systems (NHGIS)
Statistical Abstracts of United States
USDA:NRCS Geospatial Data Gateway
USGS Data & Science Portal

additional data


Social Explorer

A site that has current and correct data (along with additional data) and that allows mapping of search results.

Physical & Environmental