Association of Religion Data Archives: A Global Hub for Religious Research
The Association of Religion Data Archives (ARDA) serves as a comprehensive, free online repository of information regarding American and international religion. By providing open access to academic data, the archive aims to democratize information, making high-level research available to a broad audience including scholars, journalists, educators, and religious congregations.
The platform offers a vast array of resources, including over 900 surveys and membership reports available for preview and free download. Beyond raw data, the ARDA provides specialized tools such as GIS maps, national profiles, denominational heritage trees, and historical timelines to help users visualize and analyze religious trends.
[ไม่มีภาพประกอบ]Key Facts
- Founded: 1997 as the American Religion Data Archive; renamed in 2006 to reflect its international scope.
- Data Volume: Over 1,000 quantitative data files available as of January 2026.
- Scope: Covers religious composition and freedom across 232 nations recognized by the U.S. State Department.
- Current Home: Housed at the Center for the Study of Religion and American Culture at Indiana University Indianapolis.
- Accessibility: All data collections are free of charge for download.
The Evolution of the ARDA
The archive was founded in 1996 by Roger Finke, then a professor of sociology at Purdue University, through a grant from the Lilly Endowment. Data processing began in 1997, and the website launched in the fall of 1998 under the domain www.thearda.com. Initially, the archive focused exclusively on American religion, starting with just 33 surveys.
Growth was rapid; within a decade, the collection expanded to over 400 files. In 2005, the ARDA began hosting surveys on religion outside the United States. To reflect this global expansion, the organization officially changed its name from the American Religion Data Archive to the Association of Religion Data Archives in February 2006, while maintaining its original acronym and domain.
Over the years, the ARDA has transitioned through several institutional homes, moving from Purdue University to the Population Research Institute at Pennsylvania State University, and finally to its current location at Indiana University Indianapolis. It is currently directed by Andrew Whitehead (Indiana University Indianapolis) and Christopher Bader (Chapman University).
Comprehensive Data and Resources
The core of the ARDA is its quantitative data archive. Rather than collecting the data themselves, the ARDA staff process and archive data submitted by principal investigators and religion scholars worldwide. This collaborative model allows the archive to draw from nearly 200 different sources, including prestigious organizations such as the Pew Research Center, the Public Religion Research Institute, the World Religion Database, the American National Election Studies, and the General Social Survey.
Common research topics found within these files include:
- Public opinions on social issues (e.g., homosexuality, abortion, and the role of women in ministry).
- Perceptions of the divine or God.
- Religious affiliations and membership trends.
Specialized Tools and Learning Features
To make data more digestible, the ARDA offers several unique features. The Ahead of the Trend bi-weekly column, written by Ryan Burge and originated by David Briggs, provides interpretations and visualizations of available data. Additionally, the archive provides historical lineages, often referred to as "family trees," for major world religions and U.S. denominations.
In 2015, the ARDA introduced interactive historical timelines focusing on religion in the United States. These timelines cover nine specific areas, including religious minorities, race/ethnicity, women, and specific denominational histories for Baptists, Catholics, Methodists, and Presbyterians.
[ไม่มีภาพประกอบ]Institutional Affiliations and Recognition
The ARDA is supported by a network of academic and philanthropic organizations. It is funded and affiliated with the Lilly Endowment, the John Templeton Foundation, the Templeton Religion Trust, Indiana University Indianapolis, and Chapman University.
The quality of the archive has been recognized by professional bodies. In 2010, the Reference and User Services Association (RUSA) of the American Library Association named the ARDA one of the 30 Best Free Reference Websites. Furthermore, the Lilly Endowment's "Insights into Religion" portal recommends the ARDA as a top resource for teaching religion, youth research, and demographic studies.
| Feature | Description |
|---|---|
| Data Files | 1,000+ quantitative files from ~200 sources. |
| Global Reach | Data on 232 nations recognized by the U.S. State Department. |
| Interactive Tools | 9 historical timelines and GIS maps. |
| Key Contributors | Pew Research Center, General Social Survey, and others. |
| Cost | Free of charge. |
Frequently Asked Questions
Who provides the data for the ARDA?
The data is not collected by ARDA staff; instead, it is submitted by religion scholars and research centers from around the world, including major entities like the Pew Research Center and the General Social Survey.
Is the ARDA only focused on the United States?
No. While it began as the American Religion Data Archive, it expanded in 2005 to include international surveys and now provides information on 232 nations.
What kind of information can I find in the data files?
Users can find quantitative data on religious affiliations, perceptions of the divine, and public opinions on social issues such as the role of women in ministry and abortion.
How can I access the ARDA's resources?
All surveys, membership reports, and data collections are available for online preview and free download via the official website, www.thearda.com.
What are the interactive timelines?
Launched in 2015, these are tools that track religious history in the U.S. across nine categories, including social movements, religious minorities, and specific denominational histories.