Geographic Information Systems (GIS) : Data for the U.S.

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.

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.

A list of links hosted by Western Illinois University.

Downloadable housing data at the county, place, census tract and block group level.

The One Stop Source for environmental and natural resources data, at any time, 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.