Data included in the ARDA are submitted by the foremost religion scholars and research centers in the world. All data collections provide complete wording for each survey question, outline the research methods used, can be previewed online, and virtually all are available for download free of charge.
Research Features:
Data Archive
ARDA's Data Archive hosts hundreds of religion-related data sets for free download. Click here to view some of our most popular files:
Visit the Data Archive to browse through hundreds more files.
U.S. Maps
Using tools developed by Social Explorer, Geographic Profiles allow you to visually see the social, economic, demographic, and religious landscape of neighborhoods, cities, states, regions, and the entire United States. Once you are viewing a map you can generate a summary report using a variety of options.

Enter a zip code to see a map now:  
U.S. Congregational Membership Reports
Explore congregational membership in every county, state, and urban area in the United States. Based on the Religious Congregations and Membership Study collected by the Association of Statisticians of American Religious Bodies this is the most complete census available on religious congregations and their members.
Enter your 5-digit zip code to see a religious profile now:  
QuickStats: U.S. Surveys
Use QuickStats to browse dozens of topics and see reponses from major national surveys, demographic patterns, and changes over time! Available topics:
ARDA Newsletter
Would you like to hear about additions to our Data Archive and new features added to TheArda.com? Subscribe to our newsletter to receive email updates. We do not share or sell our subscriber lists.

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News & Research Updates:
U.S. Maps
The ARDA introduces interactive maps and reports for demographic, economic, and religious data. Browse social landscapes of neighborhoods, cities, states, and regions. Powered by Social Explorer.
Country Comparisons
The new multi-country comparison feature allows you to compare up to eight (8) countries on a variety of demographic, social, economic and religious measures.
Denominational QuickStats
Inspired by our QuickStats on national surveys, we are now introducing QuickStats for denominations.
Learning Center
Our new Learning Center includes downloadable Learning Modules, a Glossary of Religious and Statistical Terms, the Compare Yourself Survey, and Community Religious Profile.