https://news.gallup.com/poll/341963/church-membership-falls-below-majority-first-time.aspx
U.S. Church Membership Falls Below Majority for First Time
In 2020, 47% of U.S. adults belonged to a church, synagogue or mosque
Down more than 20 points from turn of the century
Change primarily due to rise in Americans with no religious preference
WASHINGTON, D.C. -- Americans' membership in houses of worship continued to decline last year, dropping below 50% for the first time in Gallup's eight-decade trend. In 2020, 47% of Americans said they belonged to a church, synagogue or mosque, down from 50% in 2018 and 70% in 1999.
U.S. church membership was 73% when Gallup first measured it in 1937 and remained near 70% for the next six decades, before beginning a steady decline around the turn of the 21st century.
As many Americans celebrate Easter and Passover this week, Gallup updates a 2019 analysis that examined the decline in church membership over the past 20 years.
Gallup asks Americans a battery of questions on their religious attitudes and practices twice each year. The following analysis of declines in church membership relies on three-year aggregates from 1998-2000 (when church membership averaged 69%), 2008-2010 (62%), and 2018-2020 (49%). The aggregates allow for reliable estimates by subgroup, with each three-year period consisting of data from more than 6,000 U.S. adults.
Decline in Membership Tied to Increase in Lack of Religious Affiliation
The decline in church membership is primarily a function of the increasing number of Americans who express no religious preference. Over the past two decades, the percentage of Americans who do not identify with any religion has grown from 8% in 1998-2000 to 13% in 2008-2010 and 21% over the past three years.
As would be expected, Americans without a religious preference are highly unlikely to belong to a church, synagogue or mosque, although a small proportion -- 4% in the 2018-2020 data -- say they do. That figure is down from 10% between 1998 and 2000.
Given the nearly perfect alignment between not having a religious preference and not belonging to a church, the 13-percentage-point increase in no religious affiliation since 1998-2000 appears to account for more than half of the 20-point decline in church membership over the same time.
Most of the rest of the drop can be attributed to a decline in formal church membership among Americans who do have a religious preference. Between 1998 and 2000, an average of 73% of religious Americans belonged to a church, synagogue or mosque. Over the past three years, the average has fallen to 60%.
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