"Data included in the ARDA are submitted by the foremost religion scholars and research centers in the world. Currently housed in the Social Science Research Institute, the College of Liberal Arts, and the Department of Sociology at the Pennsylvania State University, the ARDA is funded by the Lilly Endowment, the John Templeton Foundation, Chapman University and the Pennsylvania State University.
From the Pew Forum on Religion and Public Life, this is based on survey data of 35,000 American adults. Easy access is provided to information on Affilations, Maps, Portraits, and Comparisons.