Sources for Geographic Data
NASA and the University of Maryland maintain the Global Land Cover Facility which collects satellite data on land cover for the entire world.
NACIS and many volunteers support Natural Earth which is a "public domain map dataset ... featuring tightly integrated vector and raster data, with which you can make a variety of visually pleasing, well-crafted maps with GIS software."
NASA and CIESEN/Columbia University maintain the World Data Center which "provides access to a wide range of global data, associated documentation, and visualization and analysis tools, and to the community of experts on global data."
IPUMS "provides census and survey data from around the world integrated across time and space." There are nine different databases, including US, international, and health.
Data-Planet is a dynamic repository of officially sourced statistical data, which has been standardized, harmonized and given metadata to make the data more findable.
You can download country boundaries from Global Administrative Areas in several different formats.
Some global climate and ecological data is available from DIVA-GIS.
The GeoSUR Portal provides an entry point to spatial data published by Latin American and Caribbean agencies.
A-to-Z Maps Online (accessed via Burke Library) includes a GIS Data tab with a number of sub-menus categorizing hundreds of GIS data sources.
The University of Michigan's China Data Center provides access to maps and data online, with data that can be downloaded for free.
ESRI provides access to many types of data via the Living Atlas. These layers can be added to your own maps created in ArcGIS Online. ESRI also hosts Open Data, where people can easily find and download data in a variety of formats.
The Department of the Interior maintains a Geospatial One-Stop Portal for federal, state and local geographic data.
The Federal Geographic Data Committee coordinates the sharing of geographic data through an online portal that searches metadata held within the NSDI Clearinghouse network.
The Department of Agriculture GeoSpatial Data Gateway is an easy-to-use source for environmental and natural resources data, plus additional demographic layers.
ProtectedLands.net showcases examples and other information about the Protected Lands Database of the U.S., published by the U.S. Geological Survey’s Gap Analysis Program.
The Census Bureau maintains the American Factfinder website, from which one can download census data in GIS-readable format; see especially the datasets at TIGER Products. For historical census data, visit the National Historical Geographic Information System.
For all topographical maps and data layers, visit the National Map, maintained by the USGS.
New York State
New York State data is maintained by the New York State GIS Clearinghouse.
The NYS Office of Planning & Development has a new Geographic Information Gateway featuring not only data sets and maps but stories of how this data is being used, for example, in climate change and shorelines.
The Cornell University Geospatial Information Repository is also a clearinghouse for information about New York State.
The New York State Museum provides a nice collection of datasets for New York State.
Links to GIS Data Provided by Research Universities
UNC GIS Data Finder, by themes (e.g., social, economic)
GIS @ University of Chicago
The American Association of Geographers has lists of databases, maps & atlases, historical gazetteers and GIS.
OpenGeoPortal.org is a "collaboratively developed, open source, federated web application to rapidly discover, preview, and retrieve geospatial data from multiple repositories."
The Thematic Mapping Engine allows you to create a file of UN data which can be viewed in Google Earth.
Last updated: August 14, 2017