Searching for GIS Data
Numerous GIS data sets are freely available throughout the Web. In addition to the sources highlighted on this page you can find others with some simple Google searches. Try: GIS Data LIbguides. Also try: GIS data site: edu (or site: gov)
Canada GeoGratis Free, downloadable Canadian GIS data.
CGIAR-CSI or the Consortium for Spatial Information (CGIAR-CSI) is spatial science community that facilitates CGIAR’s international agricultural development research using spatial analysis, GIS, and remote sensing.
DIVA-GIS Free spatial data for countries around the world, including country-level data for any country of the world.
UN Data contains over 60 million data points covering themes such as: Agriculture, Crime, Education, Employment, Energy, Environment, Health, HIV/AIDS, Human Development, Industry, Information and Communication Technology, National Accounts, Population, Refugees, Tourism, and Trade.
UN Environmental Data Explorer is the authoritative source for data sets used by UNEP and its partners in the Global Environment Outlook (GEO) report and other integrated environment assessments.
United States Data
Data.gov Home of the US Government's open data. Includes data on agriculture, business, climate, energy, and more.
GeoPlatform.gov GeoPlatform provides shared and trusted geospatial data, services, and applications for use by the public and by government agencies and partners
National Map As one of the cornerstones of the U.S. Geological Survey's (USGS) National Geospatial Program, The National Map is a collaborative effort among the USGS and other Federal, State, and local partners to improve and deliver topographic information for the Nation. The geographic information available from The National Map includes orthoimagery (aerial photographs), elevation, geographic names, hydrography, boundaries, transportation, structures, and land cover.
NHGIS National Historical Geographic Information System provides free aggregate census data and GIS-compatible boundary files for the United States between 1790 and 2013
TIGER Topologically Integrated Geographic Encoding and Referencing products are spatial extracts from the Census Bureau's MAF/TIGER database, containing features such as roads, railroads, rivers, as well as legal and statistical geographic areas.
GIS Data for Individual States List created by the American Library Association
GIS Data for the US by State List created by GIS Services at MIT
Iowa Geographic Map Server provides free access to Iowa geographic map data through an on-line map viewer and through Web Map Service (WMS) connections for GIS.