Data Sources

United States Natural Resource & Environmental Data

• EPA Envirofacts
• EPA Hazardous Sites
• FEMA Map Service Center
• Find Your Watershed
• NOAA Land Cover Analysis
  
• NRCS Data Gateway
• National Geodetic Survey
• National Hydrography Dataset
  
• National Wetlands Inventory
• Soils Survey Geographic Database
• U.S. Geological Survey (USGS)
• USGS Aerial Photo Finder

United States Socio-Economic/Government Data

• Census Bureau (.shp)
• Census Bureau (SF1/SF3)
• ESRI TIGER Line Data
•  State and Local Data (Bureau of Economic Analysis)

New York State Data

• CUGIR New York Data
• New York State Museum
• New York State Orthoimagery

State GIS Clearinghouses

• Connecticut
• Maine
• Maryland
• Massachusetts
• New Hampshire
• New York
• Vermont
• More States

International Data

• Food and Agricultural Organization (FAOSTAT)
• Overpopulation.com
• Photius
• UN Human Development Report
• World Bank's WDI Tables
• World Resources Institute

Map Collections

• University of Texas Map Collection

Other Data Sources

• Data.gov
• Geocommons
• Geospatial One Stop
• Harvard Geospatial Library
• University of Arkansas Data Source Compilation
• UNC GIS Data Finder