The Statistical Abstract of the United States, published from 1878 to 2012, is the authoritative and comprehensive summary of statistics on the social, political, and economic organization of the United States. It includes religion data such as religious identification, religious bodies, church membership and attendance.

United Nations Data is a new internet-based data service for the global user community. It brings UN statistical databases within easy reach of users through a single entry point. Users can now search and download a variety of statistical resources of the UN system.

The Association of Religion Data Archives (ARDA) strives to democratize access to the best data on religion. Founded as the American Religion Data Archive in 1997 and going online in 1998, the initial archive targeted researchers interested in American religion. The targeted audience and the data collection have greatly expanded since 1998, including American and international collections and developing features for educators, journalists, religious congregations, and researchers. Data included in the ARDA are submitted by the foremost religion scholars and research centers in the world.

The Berman Jewish Databank at the Jewish Federations of North America acquires, archives, and provides open access to quantitative studies and related materials on North American Jews and Jewish communities; promotes the use of its resources by its stakeholders, and encourages transparency in the public release and reporting of research on North American Jewry.

The GSS gathers data on contemporary American society to monitor and explain trends and constants in attitudes, behaviors, and attributes. The GSS contains a standard core of demographic, behavioral, and attitudinal questions, plus topics of special interest. Among the topics covered are civil liberties, crime and violence, intergroup tolerance, morality, national spending priorities, psychological well-being, social mobility, and stress and traumatic events. The GSS is considered one of the single best sources for sociological and attitudinal trend data covering the United States.

The National Congregations Study surveys a representative sample of America's churches, synagogues, mosques, and other local places of worship. Initiated in 1998 and repeated in 2006 and 2012, the NCS is based on in-depth interviews of congregational leaders. The study documents information about worship, programs, staffing, and other characteristics of American congregations. Wave IV of the NCS will happen in 2018.

The Pew Research Center seeks to promote a deeper understanding of issues at the intersection of religion and public affairs in the U.S. and worldwide. Through public opinion surveys, demographic studies, and other social science research, they examine the religious composition of countries, the influence of religion on politics, the extent of government and social restrictions on religion, and views on abortion, same-sex marriage, stem cell research, and many other topics. Their U.S. Religious Landscape Survey is a benchmark for understanding religion in the United States. The Pew-Templeton Global Religious Futures research analyzes religious change and its impact on societies around the world.

The U.S. Religion Census offers religious data at the county level. It reports the number of congregations in every U.S. county equivalent for each of 236 faith groups. This is an update of the 1952, 1971, 1980, 1990, and 2000 studies originally done by the National Council of Churches and the Glenmary Research Center. Since 1990, the Association of Statisticians of American Religious Bodies (ASARB) has sponsored the studies.