State & Local Providence Plan data and mapper Rhode Island GIS data includes datalayers, online orthoimagery (aerial photography), digital atlas, and other maps; maintained at U.R.I. RI data through the EarthLab Server State agency GIS sites GIS data for all 50 states; compiled at U.Va. State and local aggregations compiled at U.Ark. State data repositories compiled at Connecticut College

United States   CURRENT   Census.gov data for people, households, business and industry; see 'Geography' ESRI Census 2000 TIGER/Line Data shapefiles from Census data Geodata.gov intergovernmental geospatial one-stop portal  Geospatial Data Gateway natural resources data compiled by USDA National Atlas of the United States interactive access to a wide variety of data National Geospatial Data Clearinghouse >250 spatial data servers National Map Seamless Server allows convenient area delineation and downloading of USGS data U.S. national aggregations compiled at U.Ark. U.S. federal agency GIS sites compiled at U.Va.   HISTORIC Historic U.S. Census data 1790-1960, by state and county (tabular data) Historic U.S. Census microdata IPUMS; samples from 15 censuses National Historic GIS aggregate census data and GIS-compatible boundary files, 1790 - 2000

International & Domestic Agro-Maps mapping of Agricultural Production Systems Continent Aggregations African, Australian and European data from MIT GIS Laboratory Country Boundaries compiled by CDC for use with EpiInfo™ Country Data plus regional and global, compiled at U.Ark. Country Data variety of data by country, compiled at U.C. Berkeley ESRI World Basemap available through the Brown EarthLab file server Geography Network offers data at local, state and country scales GeoGratis Canadian geospatial data portal GIS Data Depot offers data at local, state, and country scales GIST varied data with humanitarian emergency response focus Global Change Master Directory data and services Global Rural-Urban Mapping Project (GRUMP) Alpha Development Data Alpha Development Data -- Africa and Asia Urban Masks Harvard Geospatial Library MA, federal and international data, searchable by keyword IGAC geographic materials for Colombia National Geospatial Data Clearinghouse >250 spatial data servers, now with International data Pilot Analysis of Global Ecosystems (PAGE) links to International data by continent and country Postal Codes (international)   VDS Technologies Agroecosystems Dataset

  Subject Listings

Alexandria Digital Library's subject listings, also divided geographically
Geodata.gov subjects available under 'advanced search' option; includes disaster data from Katrina area
National Atlas of the United States includes subject category listings and interactive spatial extent selection
FGDC Search Wizard searches over 250 servers by topic - international and U.S.

  Other Universities' GIS Resource Sites
  Check out how other researchers and students are using GIS and remote sensing. These sites also contain data resources.

Members of the University Consortium for Geographic Information Science
Clark University Map Library
Stanford GIS Homepage
University of Arkansas Center for Advanced Spatial Technologies
University of Connecticut MAGIC
University of Rhode Island Environmental Data Center - including R.I. GIS data
University of Virginia Geospatial and Statistical Data Center

Online Maps