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.
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.
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.
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.
Downloadable housing data at the county, place, census tract and block group level.
Guides with curated lists of GIS data sources:
MI State University: https://libguides.lib.msu.edu/gisdata
UW-Milwaukee: https://guides.library.uwm.edu/FindGISData
UT: https://guides.lib.utexas.edu/gis/lists-of-gis-data-portals // https://guides.lib.utexas.edu/c.php?g=873262&p=9949272
Tips for finding satellite imagery: https://gijn.org/resource/guide-acquire-free-satellite-images/