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Data for the US
The home of the U.S. Government’s open data. Here you will find data, tools, and resources to conduct research, develop web and mobile applications, design data visualizations, and more.
ESRI Data & Maps
This set of data includes many layers for the world, such as country boundaries, UTM zones, water, roads, railroads, airports, major cities, topography/bathymetry, and a nighttime view.
National Map Viewer
Managed by the National Geospatial Program (NGP), The National Map Viewer provides visualization and download of all eight primary themes of The National Map data sets, including US Topo elevation data sets and historical topographic map products.
National Park Service GIS
Downloadable National Park System maps
Natural Earth is a resource for making custom maps. Data include administrative boundaries, parks and protected areas, populated places, hydrology, and bathymetry in vector format. There is also raster data for land cover, shaded relief, ocean water, and drainages with lakes.
Hosts a variety of free data for the world, including ASTER and MODIS imagery, land cover, and climate data.
USGS data from across the US.
State Online Atlases
A list of links hosted by Western Illinois University
US Department of Housing and Urban Development (HUD) Data Set Reference Guide
Downloadable housing data at the county, place, census tract and block group level.
The One Stop Source for environmental and natural resources data, at anytime, from anywhere, to anyone. The Gateway allows you to choose your area of interest, browse and select data from our catalog, customize the format, and have it downloaded or shipped on CD or DVD.