Global Data
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ArcGIS Data & MapsWide array of data provided by users of ArcGIS
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DIVA-GISAdministrative areas, population, terrain, transit, and gazetteer
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NASA's EarthDataSocioeconomic, population, and climate data
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Natural EarthCultural, physical, and raster data at multiple scales
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USGS Earth ExplorerSatellite and aerial imagery of the Earth
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WorldPopOpen spatial demographic data
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World Resources InsituteData relating to natural resources, energy, and the environment
United States Data
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Data.govGeneral source of data published by the U.S. Government
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U.S. Census BureauData collected by the U.S. Census, including population, education, housing, and more
