GIS DataLinks to sites where Illinois GIS data is available.

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Geographic Data

  • What is GIS?
    The term GIS is tossed around alot these days, but what does the term really mean and how does it work?  Check out our What is GIS tutorial to find out.
  • ILGIC: Illinois Geographic Information (GIS) Council
    Providing the leadership necessary to effectively and efficiently integrate Geographic Information Management Technology (GIMT) on a statewide basis, ensuring that GIMT is used as a strategic resource for the State of Illinois.
  • State GIS Clearinghouse - Illinois Natural Resources Geospatial Data Clearinghouse
    This site is a gateway to GIS data and imagery for Illinois.  Available data sets and documentation (metadata) include:  geology, water resources, nature preserves, wildlife areas, environment, land use, base data, Public Land Survey, political boundaries, roads, census information, and much more.
  • Chicago Region Clearinghouse Cooperative
    Metadata (GIS data documentation) can be found at this site for roads, socio-economic data, natural resources, museum collections, geographic boundaries, land use, and more.  This is an NSDI Clearinghouse Node and accepts metadata from any organization in Illinois, including those in the greater metro Chicago area (Northern Illinois and Northwestern Indiana).
  • Federal Geographic Data Committee
    The Federal Geographic Data Committee coordinates the development of the National Spatial Data Infrastructure (NSDI).  The NSDI encompasses policies, standards, and procedures for organizations to cooperatively produce and share geographic data.  The 16 federal agencies that make up the FGDC are developing the NSDI in cooperation with organizations from state, private sector.
  • The National Map
    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. It has many uses ranging from recreation to scientific analysis to emergency response. The geographic information available from The National Map includes orthoimagery (aerial photographs), elevation, geographic names, hydrography, boundaries, transportation, structures, and land cover. Other types of geographic information can be added within the viewer or brought in with The National Map data into a Geographic Information System to create specific types of maps or map views.   U.S. Geological Survey (USGS)