The National Longitudinal Study of Adolescent to Adult Health (Add Health) is a longitudinal study of a nationally representative sample of adolescents in grades 7-12 in the United States during the 1994-95 school year. The Add Health cohort has been followed into young adulthood with four in-home interviews, the most recent in 2008, when the sample was aged 24-32. Add Health is re-interviewing cohort members in a Wave V follow-up from 2016-2018 to collect social, environmental, behavioral, and biological data with which to track the emergence of chronic disease as the cohort moves through their fourth decade of life.
Data.census.gov is the primary way to access data from most U.S. Census Bureau surveys and programs. Search for data tables from the American Community Survey, Decennial Census, Economics Census, annual Population Estimates, annual economic surveys, and more. Visit the Census Academy site to learn more about using this tool.
Access social, economic, health and demographic data about U.S. communities and markets in this online mapping tool. View data on map, in table or chart format, and download those data that are openly available. Reports provide a summary snapshot of an area: Community Profile, Community Health Profile, Rental Housing Report, and Housing Mortgage Report.
Access: Off Campus Access is available for: UNC-Chapel Hill students, faculty, and staff; UNC Hospitals employees; UNC-Chapel Hill affiliated AHEC users.
Provides web-based access to United States Census data from 1790 to the present, and to other U.S. and international data, with the ability to make tables and interactive maps easily or export data for analysis. Data include the most commonly used variables and geographies.
Access: Off Campus Access is available for: UNC-Chapel Hill students, faculty, and staff; UNC Hospitals employees; UNC-Chapel Hill affiliated AHEC users.
The Inter-university Consortium for Political and Social Research (ICPSR) is the world's largest archive of computer readable social science data. ICPSR provides Web access to data files and documentation for use with statistical software, such as SAS, SPSS, and Stata. The ICPSR data holdings contains more than 500,000 files that cover a wide range of social science areas such as population, economics, education, health, social and political behavior, social and political attitudes, history, crime, aging, and substance abuse. Individual registration and adherence to responsible use statement are required.
Note: Off-campus access available if individual's account is created on campus or while authenticated.
Access: Off Campus Access is available for: UNC-Chapel Hill students, faculty, and staff; UNC Hospitals employees; UNC-Chapel Hill affiliated AHEC users. Coverage: Varies
Provides simultaneous access to 14 statistical databases from the United Nations and other international organizations through one interface. Areas of coverage include agriculture, education, energy, industry, labor, national accounts, population, tourism and trade. Includes Millennium Development Goals indicators, and UN Key Global Indicators.
Statistics on development indicators back to 1960 from the World Bank. Time series data cover demographic, social, economic, financial, natural resources, and environmental topics for more than 200 countries and geographic and political groupings of countries. Data are updated quarterly. Access through the online dataBank, or in Excel or CSV formats.
Access: No restrictions. Coverage: 1960 - present, updated quarterly.
Offers extensive database of opinion poll datasets. Roper’s iPOLL allows searching at the question level. The Center archives national opinion polls back to 1935, both U.S. and some international polls. Holdings include survey results data from academic, commercial and media survey organizations such as Gallup, Harris Interactive, Pew Research Associates, ABC, CBS, Wall Street Journal and many more. Many datasets are available for instant download in ASCII or SPSS format. Datasets not available for immediate download may be requested from the Center to be queued for digitization.
NOTE: First time users to NEW Roper iPoll need to self-register for access at login. Your credentials from Classic iPOLL will NOT work without new registration as of 8/14/2020. Classic iPOLL will no longer be updated after Sept 1, 2020.
Access: Off Campus Access is available for: UNC-Chapel Hill students, faculty, and staff; UNC Hospitals employees; UNC-Chapel Hill affiliated AHEC users. Coverage: 1935 -
by Michele Hayslett
Last Updated May 12, 2025
175 views this year
Library Data Services
Library Data Services cater to researchers interested in working with data, mapping, texts, visualization, and technology. Many of these services are available online. Davis Library Data Services, located on the second floor of Davis Library, offers:
A computing lab with specialized software for GIS and data visualization & analysis.
Walk-in assistance provided by knowledgeable student consultants during set hours.
Consultations with specialists for more in-depth inquiries (by appointment).
Spaces for collaboration and presentation, complete with white boards and external displays.