Based on recent studies from Pew Research Center, Gallup, and the Public Religion Research Institute (PRRI), American church life shows a stabilization of Christian affiliation after years of decline, accompanied by a plateau in the growth of the religiously unaffiliated, or “nones”. However, participation varies significantly by generation, political affiliation, and specific denomination.
Key takeaways from recent studies
- Christian share has stabilized. The Pew Research Center‘s 2023–24 Religious Landscape Study found that 62% of U.S. adults identified as Christian, a figure that has held steady since 2019. This follows a significant decline from 78% in 2007.
- “Religious nones” have leveled off. The percentage of U.S. adults who identify as religiously unaffiliated has also temporarily plateaued at around 29%, after decades of rapid growth. This group includes atheists (5%), agnostics (6%), and those who identify as “nothing in particular” (19%).
- Church attendance continues to decline. Overall church attendance remains low.
- Gallup: A March 2024 poll found that only 30% of U.S. adults attend religious services regularly (weekly or almost weekly), down from 42% two decades prior.
- Gallup: In 2024, self-reported weekly attendance was at 21%.
- Post-pandemic rates: On average, churches were still at only 85% of their pre-pandemic attendance levels as of early 2025.
Generational shifts in religiosity
Recent data reveals significant differences in religious affiliation and practice among generations.
- Less religious youth: Younger adults are substantially less religious than older adults across multiple metrics.
- Only 46% of adults aged 18–24 identify as Christian, compared to 80% of adults aged 74 or older.
- 43% of the youngest adults are religiously unaffiliated, in stark contrast to 13% of the oldest adults.
- Decreased participation: Younger generations are also less likely to attend religious services monthly (25% for ages 18–24 vs. 49% for ages 74+) and pray daily (27% vs. 58%).
Denominational and demographic trends
- Decline in mainline Protestantism: Mainline Protestantism has experienced the sharpest decline, shrinking from 18% of the U.S. adult population in 2007 to 11% in 2023–24. The United Methodist Church, in particular, has seen significant splintering.
- Growth in nondenominational churches: Nondenominational Protestantism is the one area of growth, rising slightly from 6.2% of the population in 2014 to 7.1% in 2023–24.
- Growing religious diversity: The share of Americans identifying with non-Christian religions has trended upward, from 4.7% in 2007 to 7.1% in 2023–24.
- Politics and religion: The decline of Christianity and rise of the “nones” is more pronounced among Democrats than Republicans. In 2025, more Americans also reported feeling that their religious beliefs are in conflict with mainstream culture.
Financial and structural aspects
- Congregational size: According to a 2023 study, the average U.S. church has a median of 60 regular worship participants. Following pandemic-related lockdowns, most churches remain below pre-pandemic attendance levels, with two-thirds now having fewer than 100 people.
- Increasing financial giving: Despite declining membership in some denominations, studies show increases in financial contributions and adult baptisms for some groups, like the Presbyterian Church (U.S.A.).