A list of resources that estimate the populations of religious communities in the United States. 

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The Association of Relgion Data Archves 

• 2010 Congregational Membership Report

Hindu American Foundation

• 2008 Estimate

Pew Forum for Religion and Public Life

• “The Rise of Asian Americans” (Pew Research Social and Demographic Trends) (2012)
• “Asian Americans: A Mosaic of Faiths” (2012)
• “How Many Sikhs?” (2012)
• “Muslim Americans: Middle Class and Mostly Mainstream” (2007)