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Illinois Free GIS Data

Free Geographic Information System (GIS) Data for Illinois

This service is for GIS professionals to accompany our imagery offerings.
You must have the appropriate GIS software and experience in order to utilize this data.
We recommend ESRI ArcView to utilize data with different formats and projections.

United States Geological Service (USGS) GIS Data

  • USGS 1:24,000 Digital Line Graphs (DLG) by quad - Hydrography, Transportation, Boundaries, Public Land Survey System, Built-up Areas, Hypsography, Nonvegetative Surface Cover, Vegetative Surface Cover, and Named Landforms. SDTS format
  • USGS 1:100,000 Digital Line Graphs (DLG)
  • USGS 1:2,000,000 Digital Line Graphs (DLG) for Illinois SDTS format
  • USGS Digital Line Graph Standards
  • USGS National Atlas Map Maker Raw Data Download
    Agriculture: Agriculture Census 2002 - Crops, Expenses, Farmland...
    Biology: Bat Ranges, Butterflies, Forests, Invasive Species, Land Cover...
    Boundaries: Congressional Districts, Counties, Federal lands, States...
    Climate: Precipitation, Hazard Events, Hurricanes, Sea Temperature...
    Environment: Air Releases, Hazardous Waste, Toxics Release...
    Geology: Earthquakes, Landslides, Shaded Relief, Volcanoes...
    History: Presidential General Election 2000 County and State Results.
    Map Reference: Cities and Towns, Urban Areas...
    People: Census, Crimes, Energy Consumption, Mortality...
    Transportation: Airports, Parkways and Scenic Rivers, Railroads, Roads...
    Water: Aquifers, Dams, Watersheds, Streams and Waterbodies...
  • USGS Illinois County Map with selected Cities and Towns
  • USGS Illinois Reference Map
  • USGS Illinois Rivers and Lakes Map
  • USGS Illinois Precipitation Map
  • USGS Illinois Federal Lands and Indian Reservations Map

  • Environmental Systems Research Institute, Inc. (ESRI) ArcData

  • Tiger 2000 for Illinois American Indian/Alaska Native Areas, Block Groups Demographics, County Demographics, Place Demographics, State Demographics, Tract Demographics, Congressional Districts, County, County Census Divisions, Hydrography, Landmarks, Rails, Roads, School Districts , State Legislative District, Urban Areas, and Water

  • US Environmental Protection Agency - Surf Your Watershed

  • EPA Surf Your Watershed for Illinois

  • US Fish & Wildlife Service GIS Wetlands Data

  • Download Free Statewide FWS wetlands GIS Data for Illinois (large files 100Mb to 1Gb+)
  • Metadata of FWS wetlands GIS Data by state
  • FWS Wetland Online Mapper Tool

  • U.S. Department of Agriculture
    Natural Resources Conservation Service
    NRCS Soil Data for Illinois

  • Free soils GIS Data

  • Federal Emergency Management Agency (FEMA)
    Flood Data and Coastal Barrier Resource Area (CBRA) Q3 Data

  • Download free FEMA Flood Data for Illinois

  • Free GIS Data from the U.S. Census Bureau
    2010 TIGER/Line® Shapefiles for Illinois

  • 111th Congressional District
  • 110th Congressional District
  • 108th Congressional District
  • 106th Congressional District
  • American Indian/Alaska Native/Native Hawaiian Area
  • Cencus Block Group
  • Census Blocks
  • Census Tract
  • Core Based Statistical Area
  • County and Equivalent
  • County Subdivision
  • Combined Statistical Area
  • Metropolitan Division
  • Military Installation
  • Places
  • Primary and Secondary Roads
  • Census Public Use Microdata Area
  • Elementary School District
  • School District--Secondary
  • Unified School District
  • State boundary
  • State Legislative District (Lower Chamber)
  • State Legislative District (Upper Chamber)
  • Traffic analysis zone
  • 5-digit ZIP Code Tabulation Area
  • U.S. Census Bureau
    2010 TIGER/Line® Shapefiles - Nationwide GIS Data

  • 111th Congressional Districts
  • Alaska Native Regional Corporations (ANRC)
  • Census Tracts
  • Combined New England City and Town Areas (CNECTAs)
  • Combined Statistical Areas
  • Consolidated Cities
  • Core Based Statistical Areas (CBSA - Metropolitan and Micropolitan Statistical Areas)
  • Counties
  • County Subdivisions
  • Metropolitan Divisions
  • NECTA Divisions
  • New England City and Town Areas (NECTAs)
  • Places
  • School Districts – Elementary
  • School Districts – Secondary
  • School Districts – Unified
  • State Legislative Districts – Lower Chamber
  • State Legislative Districts – Upper Chamber
  • States
  • Subminor Civil Divisions
  • Tribal Tracts
  • ZIP Code Tabulation Areas (ZCTAs)
  • Documentation for Shapefiles

  • TIGER/Line Shapefiles Frequently Asked Questions (FAQ) webpage
  • 2010 TIGER/Line Shapefile Technical Documentation (PDF)
  • A description of the relationship files and an entity relationship diagram (PDF)

  • Other sites with information for Illinois

  • GIS Data links for Illinois - Find free GIS data from State Agencies
  • Attribute Data links for Illinois
  • Find elected County officials for Illinois - National Association of Counties
  • Illinois From Wikipedia, the free encyclopedia
  • Illinois Quick Facts from US Census Bureau - Demographic Data
  • MapStats Illinois from Fedstats