Bureau of Transportation Statistics Atlas Data

Nationwide geographic databases of transportation facilities, transportation networks, and associated infrastructure.

Federal Emergency Management Agency (FEMA)

Disaster mitigation, preparedness, response, recovery, education, and references.

NASA Land Processes Distributed Active Archive Center

Source for land-related data collected by EOS sensors.

National Center for Health Statistics

A rich source of information about America’s health.

National Historic GIS

Historic census geography provided by U of Minnesota.

National Geodetic Survey

Provides information and products related to the definition and management of the National Spatial Reference System (NSRS) – the framework for latitude, longitude, height, scale, gravity, orientation and shoreline throughout the United States.

National Geospatial Intelligence Agency (NGA)

The NGA provides imagery, map-based intelligence and geospatial information in support of the nation’s military forces, national policy makers and civil users.

National Institute of Justice Mapping & Analysis for Public Safety

GIS data sources for criminal justice analysis.

National Oceanic and Atmospheric Administration (NOAA)

Federal agency focused on the condition of the oceans and the atmosphere. Provides environmental information products.

NOAA National Environmental, Satellite, Data, and Information Service

Containing environmental data from satellites and other sources to promote, protect, and enhance the Nation’s economy, security, environment, and quality of life.

Natural Resources Conservation Service (NRCS) Soil Survey

Good sources for national soil survey spatial and tabular data.

US Census Bureau

National census data. A leading source for data about America’s people and economy.

US Environmental Protection Agency (EPA)

Environmental laws, regulations, and data.

US Fish & Wildlife Service

USFWS has a Geospatial Services platform that provides national and regional GIS data.

USDA: NRCS Geospatial Data Gateway

One Stop Source for environmental and natural resources data. The Gateway allows you to choose your area of interest, browse and select data from their catalog, customize the format, and have it downloaded or shipped.

USGS Earth Resources Observation and Science (EROS) Data Center

Great source for U.S. topographic data. Other data includes aerial photography, satellite imagery, land cover, digitized maps, etc.

USGS GEO-Data Explorer (GEODE)

Site no longer available. For current USGS Energy Program data, please visit the USGS Energy Program’s website at http://energy.usgs.gov/index.html.   For USGS Geospatial databases, please visit the Geospatial website at http://www.usgs.gov/ngpo/.

USGS National Geospatial Program

Node of the National Geospatial Data Clearinghouse.  Provides leadership for USGS geospatial coordination, production and service activities. The Program engages partners to develop standards and produce consistent and accurate data through its Geospatial liaison network.

USGS Water Resources NSDI Node

Free downloadable spatial data sets.