Pew Research Center is a nonpartisan fact tank that informs the public about the issues, attitudes and trends shaping America and the world by conducting public opinion polling, demographic research, content analysis and other data-driven social science research.
The Roper Center for Public Opinion Research is one of the world's leading archives of social science data, specializing in data from surveys of public opinion. The data held by the Roper Center range from the 1930s to the present.
Each year the Human Development Report (HDR) presents a wealth of statistical information on different aspects of human development. All these data are available for download here in several different ways.
This data archive is a collection of surveys, polls, & other data on religion, made available online. There are nearly 400 data files included in the ARDA collection.
from Pennsylvania State University
Home of the U.S. government's open data, including over 200,000 datasets from various government agencies, published jointly by OMB, GSA, and the Office of Government Information Services at the National Archives.
Statista integrates statistical data from over 80,000 topics in areas such as business, education, finance, media, politics, society, and technology. Statista gathers data from over 18,000 sources, including market reports, trade publications, scientific journals, and government databases. The reports, charts, infographics, and statistics found in the database can be downloaded in Excel, PDF, PNG, or PowerPoint formats or embedded in web pages.
The Social Progress Index, designed by Michael Porter of Harvard Business School, uses noneconomic measures to gauge the well-being of a country's inhabitants. It consists of 52 indicators, divided into three major categories: basic human needs (shelter, sanitation), foundations of well-being (life-expectancy, school enrollment), and opportunity (tolerance, political rights).