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Religious Statistics: Individual Affiliations

Religion statistics for research.

Pew Forum on Religion and Public Life

Religion in American Culture: U.S. Religious Landscapes Survey
Based on interviews with more than 35,000 American adults, this extensive survey details the religious makeup, religious beliefs and practices as well as social and political attitudes of the American public.  A full report is available online.  Also available are interactive tools on affiliations, maps, portraits of religious groups, and comparisons.

American Religious Identification Survey

The American Religious Identification Study (ARIS) is a nationally representative survey of U.S. adults in the 48 contiguous states.  Three waves of the survey were conducted in 1990, 2001, and 2008.

Youth & Religion

The National Study of Youth and Religion is a research project directed by Christian Smith, Professor in the Department of Sociology at the University of Notre Dame and Lisa Pearce, Assistant Professor of Sociology at the University of North Carolina at Chapel Hill. This project, generously supported by Lilly Endowment Inc., began in August 2001 and is currently funded through December 2010.

This website includes reports and questionarres.  Also valuable is a list of link to additional youth surveys with questions about religion.