LibGuides: Geographic Information Systems & Maps: GIS Data Sources

Chicago region

Chicago Data Portal
Browse the data catalog by category, search to find a specific dataset, or take advantage of one of the unique Chicago apps.
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Categories include: Administration & Finance, Buildings, Community, Education, Environment, Ethics, Events, FOIA, Facilities & Geo. Boundaries, Health & Human Services, Historic Preservation, Parks & Recreation, Public Safety, Sanitation, Service Requests, and Transportation.
Chicago Metropolitan Agency for Planning (CMAP) Data Hub
Find data, maps, and other web mapping applications.
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Categories include boundaries, demographics, economy, environment, infrastructure, land use, transit, and water.
City of Chicago Geographic Information Systems
Geospatial data and interactive maps from an official website of the City of Chicago.
CLEARmap - Citizen Law Enforcement Analysis and Reporting Map
The Chicago Police Department provides interactive maps of crime data, registered offenders, community concerns, and Chicago Police locations.
Cook Central
GIS data, maps, and applications for Cook County, Illinois.
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Browsable categories include hyperspectral, LiDAR, multispectral, & oblique Imagery; natural environment & recreation; boundaries & districts; property & land records; printable maps; aerial imagery; places of interest; and transportation.
GIS Consortium
This organization of Chicago-area communities shares GIS resources, information, staffing, and technology.
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Check the "Members" tab to see if your community is represented.
Historical Chicago Data
Search and browse geospatial data curated by the University of Chicago Library.
District 535 Map

Illinois

Illinois Department of Transportation
Search for data on statewide features (highway, railroad, and structure). Filter by county using the provided codes.
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Be prepared to adjust your browser settings in order to view the entire landing page.
Illinois Geospatial Data Clearinghouse
As an established node of the National Spatial Data Infrastructure Clearinghouse Network, the Illinois Clearinghouse serves as a starting point for the GIS and remote sensing user communities in Illinois.
Illinois Natural History Survey Collections Data
The INHS has several downloadable collection datasets for amphibians, reptiles, crustaceans, fish, mammals, and mollusks.
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Select "Data Sets"
Illinois Open Data Portal
Find data, create maps and graphs, and download the data for your own analysis.
Illinois State Geological Survey | Resources
Search maps, publications, and application resources such as coal mines, oil & gas resources, water & wells, stratigraphy, land surveys, and historical aerial photography.
Illinois State Water Survey Prairie Research Institute
The ISWS Data is arranged by weather & agricultural; streamflow & flood; droughts; groundwater & wells; and atmosphere & precipitation chemistry.

United States

AVRIS Data Portal (NASA)
Bureau of Transportation Statistics | Transtats
The Data Directory lists databases and data tables as well as a site search.
Dataset Reference Guide (US Department of Housing and Urban Development)
Contents include housing markets, housing finance, disabilities, neighborhood conditions, demographics, homelessness, fair housing, economic conditions, quality of life, and rural.
Earth Resources Observation and Science (EROS) Center | U.S. Geological Survey
GeoPlatform.gov
Recognized as an access for data point by the Geospatial Data Act of 2018
GIS WTB | Federal Communications Commission
Multi-Resolution Land Characteristics Consortium (MRLC) National Land Cover Database (NLCD) (U.S. Geological Survey)
National Map
The U.S. Geological Survey's National Map is a suite of products and services that provide access to base geospatial information to describe the landscape of the United States and its territories.
Small Scale Data (U.S. Geological Survey)
A collection of small-scale datasets, originally developed for the now discontinued National Atlas.
Story Maps | Library of Congress
Story Maps at the Library of Congress Geography and Map Division are immersive web applications that tell the incredible stories of the Library’s collections through narrative, multimedia, and interactive maps.
TIGER Data Products
TIGER stands for the Topologically Integrated Geographic Encoding and Referencing system and represents the U.S. Census Bureau's geographic spatial data.
U.S. Government Open Data
Under the OPEN Government Data Act, government data is required to be made available in open, machine-readable formats, while continuing to ensure privacy and security. Use this as a central catalog for data published on government agency websites.
Uniform Crime Reporting Program (FBI)
The FBI's UCR program is a nationwide, cooperative effort of over 18,000 law enforcement agencies who report data on crimes brought to their attention. UCR reports include Crime in the United States, Hate Crime Statistics, and Law Enforcement Officers Killed and Assaulted.

World / Global / International

Global Administrative Areas (GADM)
GADM provides maps and spatial data for all countries and their sub-divisions. You can browse their maps or download the data to make your own maps.
Humanitarian Data Exchange (HDX)
HDX is an open platform for sharing data across crises and organizations. Launched in July 2014, the goal of HDX is to make humanitarian data easy to find and use for analysis.
Living Atlas of the World (ArcGIS )
ArcGIS Living Atlas of the World is the foremost collection of geographic information from around the globe. It includes maps, apps, and data layers to support your work.
WHO Global Health Observatory Data Repository
The GHO data repository is WHO's gateway to health-related statistics for its 194 Member States. It provides access to over 1000 indicators on priority health topics.
World Resources Institute
WRI produces and curates data sets as part of its commitment to turn information into action.