Association of Religion Data Archives (ARDA)
The ARDA contains many datasets pertaining to religion, such as surveys on topics such as the public's religious attitudes and practices, surveys of church leaders, and studies on the provision of social services by individual congregations. ARDA also provides geographic profiles of congregations and demographic profiles of denominations
Pew Research Center's Religion and Public Life Project
The Religion and Public Life Project is devoted to the intersections between regligious faith and public affairs, including topics such as "shifting religious composition to the influence of religion on politics to the extent of government and social restrictions on religion." In addition to reports and analyses, it provides access to a variety of data-related resources, such as individual datasets and interactive databases. The Project's undertakings range from large-scale surveys such as the U.S. Religious Landscape Survey to summaries of state-level legislation on religious law.