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Primary online interface for viewing US Census data, including population, housing, economic, geographic, and governmental data.
Census Quick Facts
Provides quick census data for states, counties and cities.
Oregon's Road to 4 Million
PSUs Population Research Center shows how Oregon's population got to 4 million, with data going back to the 1800s and historical detail on race/ethnicity, age, gender, place of birth and the like.
Data Visualization Resources
National and International Data Sources
The home of the U.S. Government’s open data
where you will find data, tools, and resources to conduct research, develop web and mobile applications, design data visualizations, and more.
Developed by the member agencies of the Federal Geographic Data Committee (FGDC), the Geospatial Platform provides geospatial data, services, and applications for use by the public and by government agencies and partners to meet their mission needs.
Geospatial Data Gateway - USDA
The Geospatial Data Gateway (GDG) is the One Stop Source for environmental and natural resources data. The Gateway allows you to choose your area of interest, browse and select data from our catalog, customize the format, and have it downloaded or shipped on CD or DVD.
UN GEO Data Portal
The GEO Data Portal is the authoritative source for data sets used by United Nations Environment Programme and its partners in the Global Environment Outlook (GEO) report and other integrated environment assessments.
ArcGIS Online Maps and Map Layers (Esri)
Some of these maps can be accessed freely by anyone, others, for example the Demographic Maps, require an ArcGIS Online paid or trial subscription.
GIS Data Depot
Free data for the geography community.
NCSU Library's GIS page
North Carolina State University Library's GIS page and data metasearch tool
GIS and Data Visualization Books in the Library
Cool GIS Visualizations and Sites
This project investigates spatial patterns of residential segregation in Nineteenth Century American cities, exploring issues of wealth, occupation and race.
Racial Dot Map
This racial dot map is an American snapshot; it provides an accessible visualization of geographic distribution, population density, and racial diversity of the American people in every neighborhood in the entire country.
Mapping Inequality: Redlining in New Deal America
Mapping Inequality updates the study of New Deal America, the federal government, housing, and inequality for the twenty-first century. It offers unprecedented online access to the national collection of "security maps" and area descriptions produced between 1935 and 1940 by one of the New Deal's most important agencies, the Home Owners' Loan Corporation or HOLC (pronounced "holk").
From simple maps to complex analyses, NatureServe is your one-stop access to the data on the status and location of species and ecosystems, customized tools that support data use and analysis, and scientific and technical expertise needed to conduct biodiversity and land-use assessments and planning that guide conservation action.
Nature is unevenly distributed in and across cities despite the fact that much else about cities scales with population. The City Nature project combines spatial analysis of parks and other natural areas in cities with text mining of planning documents and published historical narratives to explore why.