The U.S. Congregational Life Survey is made available for download on the Association of Religion Data Archives (the ARDA). Currently, there are 38 different US CLS datasets. These datasets are from both the 2001 and 2008/2009 waves and consist of leader, congregational profile, and attender surveys.
Attender Surveys
Leader Surveys
Congregational Profiles
Attender Survey
Leader Surveys
Congregational Profile