Research Guides: GIS: Geographic Information Systems: Find GIS Data

United States

Geospatial Data Gateway
One stop source for environmental and natural resource data.
TNM (the National Map) Download
USGS's interface for downloading data from the National Map
data.census.gov
A source for population, economic, housing, and geographic information and data about the United States, Puerto Rico, and the Island areas. Includes information about income, education, insurance, employment, housing, poverty, veterans, and much more. Replaces American FactFinder
Census Boundaries
The core geographic mapping boundaries for census data (TIGER).
more...less...
These files do not include demographic data, but they do contain geographic entity codes (GEOIDs) that can be linked to the Census Bureau’s demographic data, available on data.census.gov.
National Weather Service GIS Data Portal
Weather data
US Department of Housing and Urban Development (HUD) Local Level Data
Downloadable housing data at the county, place, census tract and block group level.
Data.gov
Data.gov increases the ability of the public to easily find, download, and use datasets that are generated and held by the Federal Government.
National Historical Geographic Information System (NHGIS)
The NHGIS provides, free of charge, aggregate census data and GIS-compatible boundary files for the United States between 1790 and 2000.

Denver Open Data
Open data about all aspects of Denver including transportation, population, buildings, public works, etc.
Denver Regional Council of Governments (DRCOG) Data Catalog
Spatial and tabular data that is crucial to planning and policy decisions for the Denver metro area.
Colorado GeoLibrary
The geospatial data portal for University of Colorado libraries.
Colorado Information Marketplace (CIM)
Stats and facts issued by the State of Colorado. Includes data catalog.
Colorado Department of Transportation: Online Transportation Information System
Highway, traffic, and other data.

Natural Earth
Natural Earth is a public domain map dataset available at 1:10m, 1:50m, and 1:110 million scales. Featuring tightly integrated vector and raster data, with Natural Earth you can make a variety of visually pleasing, well-crafted maps with cartography or GIS software.
World Resources Institute: Resources
Maps, charts, data sets, infographics, and other visual resources about the climate, energy, food, forests, water, and cities.
EarthExplorer
Query and order satellite images, aerial photographs, and cartographic products through the U.S. Geological Survey.

GeoBlacklight Portals
A multi-institutional open-source collaboration building a better way to find and share geospatial data
OpenStreetMap
View, edit and use geographical data.
ArcGIS Open Data
Open data can be found on ArcGIS Hub, an easy-to-configure cloud platform that organizes people, data, and tools
ArcGIS Living Atlas
Maps, apps, and data layers provided by the ArcGIS community to support your work.

Social Explorer This link opens in a new window
Create and save demographic maps and reports down to the U.S. neighborhood and street level using U.S. census data, the American Community Survey, and the Religious Congregations and Membership Study. Visually analyze and understand demography and social change throughout U.S. history. Tip: Start with the maps and tables.

ArcGIS Data & Maps
The ArcGIS Data and Maps group provides online access to the data layers that accompany the ArcGIS software as ArcGIS Data and Maps. The data layers require the latest version of ArcGIS Pro, or ArcGIS Desktop 10.5 or later.