Alabama
Alaska – Alaska State Geo-Spatial Data Clearinghouse
Arizona – AZGeo Clearinghouse
Arkansas – Arkansas GIS Office
California – State of California Geoportal
Colorado – Colorado Department of Local Affairs
Connecticut – UConn Map and Geographic Information Center (MAGIC)
District of Columbia – Office of the City Administrator Open Data Catalog
Florida – Florida Geographic Data Library
Georgia – Georgia GIS Clearinghouse
Hawaii – Hawaii Statewide GIS Program
Idaho – Idaho Geospatial Office
Illinois – Illinois Geospatial Data Clearinghouse
Indiana – Indiana Spatial Data Portal
Kansas – State of Kansas GIS Data Access and Support Center
Kentucky – Kentucky Geography Network
Louisiana – Louisiana Geographic Information Center
Maine – Maine Office of GIS
Maryland – MD iMAP
Massachusetts – MassGIS
Michigan -- Michigan GIS Open Data
Minnesota – Minnesota Geospatial Information Office
Mississippi – Mississippi Geospatial Clearinghouse
Missouri – Missouri Spatial Data Information Service
Montana – Montana Geographic Information Clearinghouse
Nebraska – Nebraska Map
Nevada
W.M. Keck Earth Sciences & Mining Research
Nevada Natural Heritage Program
Nevada Department of Transportation
New Hampshire – New Hampshire Geographically Referenced Analysis and Information Transfer System (NH GRANIT)
New Jersey – New Jersey Geographic Information Network
New Mexico – Resource Geographic Information System
New York – New York State GIS Clearinghouse
North Carolina – NC One Map
North Dakota – North Dakota Geographic Information Systems
Ohio – Ohio Geographically Referenced Information Program
Oklahoma
University of Oklahoma Center for Spatial Analysis
Oklahoma Geographic Information Council
Oregon – Oregon Geospatial Enterprise Office
Pennsylvania – Pennsylvania Spatial Data Access
Rhode Island – Rhode Island Geographic Information System
South Carolina – South Carolina Department of Natural Resources
South Dakota – South Dakota GIS
Tennessee – Tennessee GIS Clearinghouse
Texas
Texas Natural Resources Information System
Utah – Utah Automated Geographic Reference Center
Vermont – Vermont Center for Geographic Information
Virginia
Virginia Department of Conservation and Recreation
Virginia Department of Emergency Management
Virginia Department of Environmental Quality
Virginia Department of Forestry
Virginia Department of Game and Inland Fisheries
Virginia Information Technologies Agency (Contact info for GIS coordinators by locality)
Washington – Washington State Geospatial Clearinghouse
West Virginia – West Virginia GIS Technical Center
Wisconsin – Wisconsin State Cartographer’s Office
Wyoming
