Starting the Hunt: Guide to Free Geospatial Data

Great site for state-wide data resources.

Connecticut Department of Environmental Protection GIS Data

Downloadable GIS data developed and shared by Connecticut DEP.

Connecticut Map and Geographic Information Center (MAGIC)

Source of maps, atlases, gazetteers, aerial photographs, and digital geospatial data pertaining to the state of Connecticut, New England and the world.

Maine Office of GIS

Good source for statewide baseline geospatial data. Provides services and support to users of geospatial technology in state government and the public.

New Hampshire GRANIT

New Hampshire’s Statewide GIS Clearinghouse. Offers an array of geospatial services, including data development/distribution, spatial analysis, online mapping, and image processing, etc.

New York State GIS Clearinghouse

Great source for downloadable GIS data of New York State.

Pennsylvania Spatial Data Access (PASDA)

The official public access geospatial data clearinghouse for Pennsylvania.

Rhode Island GIS (RIGIS)

Downloadable GIS data for Rhode Island.

Vermont Center for Geographic Information, Inc. (VCGI)

Good source for downloadable GIS data, information, and activities of Vermont.