American adults who associate with a mainline church
Percent of all U.S. adults, 2008 (in percent)
Key finding
- American adults who associate with a mainline church: 15%. Adult church attendance indicates only 15% of all American adults associate with a mainline church
Source: Barna Group, Report Examines the State of Mainline Protestant Churches · Surveys of mainline adults: 267 in 1998 and 1,148 in 2008. Article published 2023-12-05.
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Questions about this statistic
What does this statistic show?
American adults who associate with a mainline church: 15%. Adult church attendance indicates only 15% of all American adults associate with a mainline church.
Who published this data?
Barna Group, 2008. Source: Barna Group, Report Examines the State of Mainline Protestant Churches (https://www.barna.com/research/report-examines-the-state-of-mainline-protestant-churches/).
Where can I get the full data and a citation?
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More Attendance statistics
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- Churchgoers' views on the amount of liturgical style in their church Lifeway Research, 2026
- Regular religious service attendance by age group Lifeway Research, 2026
- Adults who will attend more religious services during the holiday season Barna Group, 2008
- Adults who will attend more religious services during the holiday season Barna Group, 2008
About this data
Leader Insights collects statistics about U.S. churches from published research by organizations such as Lifeway Research, Barna Group, Springtide, the American Bible Society and PRRI. Every number is checked against the wording of the original source before it is published, and each statistic links back to the study it came from. Figures are reproduced from the publishers named above; see the source for full methodology.