The Association of Religion ArchivesProvides statistics on religion -both the in U.S. and internationally. Data comes from "...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."