Data Sources 

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GIS Data Sources

The following links are sites that offer free GIS data. If you know of a site that should be added to the list, please let us know.


The National Map

Mineral Resources Spatial Data

Water Resources GIS Data

Earth Explorer

Maps, Imagery and Publications

US Census Bureau Data

US Census Bureau

TIGER/Line Shapefiles

ESRI Data Links

ArcGIS Resource Center


Other National Data

BLM Navigator

Federal Geographic Data Committee (FGDC) Geospatial Platform

PHMSA National Pipeline Mapping System (NPMS)

NRCS GeoSpatial Data Gateway

USDA Web Soil Survey (WSS)

Corporate GIS Sites with Free Data

National Historical Geographic Information System

Oceanic and Atmospheric Data

National Weather Service GIS Data Portal

National Hurricane Center GIS Data and Products


International Data

Center for International Earth Science Information Network (CIESIN)

GeoBase: Canadian site for sources of free GIS data

GeoGratis: Canada's National Digital Atlas

Geoscience Australia

Socioeconomic Data and Applications Center (SEDAC)

Public Geodata for the UK