The Association of Religion Data Archives provides QuickStats about religious beliefs and attitudes using data from major national surveys.
"The Pew Forum on Religion & Public Life, launched in 2001, seeks to promote a deeper understanding of issues at the intersection of religion and public affairs. The Forum pursues its mission by delivering timely, impartial information to national opinion leaders, including government officials and journalists. As a nonpartisan, non-advocacy organization, the Forum does not take positions on policy debates."
Featured Study
Faith on the Hill: The Religious Affiliations of Members of Congress
Pew Global Attitudes Project is a series of worldwide public opinion surveys that encompasses a
broad array of subjects ranging from people's assessments of their own
lives to their views about the current state of the world and important
issues of the day.
Some of these surveys include questions about religion. In particular, views on Jews and Muslims.
The World Values Survey investigates values and cultural changes in societies all over the world. A variety of questions on religion and morality are included. Registration is required to access data files. Online anlysis options are available.
Publications based on this survey that discuss religion include:
The American National Election Studies (ANES) produces high quality data on voting, public opinion, and political participation to serve the research needs of social scientists, teachers, students, policy makers and journalists who want to better understand the theoretical and empirical foundations of national election outcomes.
The surveys include questions on religion. For quick stats look in the Guide to Public Opinion for Social & Religious Characteristics of the Electorate.