Religion in America Today: Attendance, Belief, and the Rise of the 'Nones'

The Numbers: What the Data Actually Shows

The headline finding from two decades of survey research is consistent: Americans are less religiously affiliated than they used to be, and the trend shows no sign of reversing. Pew Research Center tracking data indicates that self-identified Christians represented roughly 78% of U.S. adults in 2007. By 2023, that figure had dropped to approximately 63%. Over the same period, the share of Americans claiming no religious affiliation climbed from about 16% to nearly 30%.

Gallup's long-running church membership surveys tell a similar story. In 2020, Gallup reported that fewer than half of U.S. adults — 47% — said they belonged to a church, mosque, or synagogue, the first time that figure had fallen below 50% in eight decades of tracking.

Regular attendance has dropped even further than membership. Many Americans who maintain a nominal religious identity attend services rarely or not at all, a group sometimes called "cultural Christians" or "Easter and Christmas" worshippers.

Who Is Leaving — and Who Isn't

The retreat from organized religion is not uniform. Generational change is the most significant driver: Millennials and Gen Z are far less likely to identify with a religion than Baby Boomers or the Silent Generation were at comparable life stages. Importantly, research indicates many young people who grew up without religious affiliation are not returning to church when they form families — a pattern that had previously softened generational declines.

Geographically, the South and parts of the Midwest remain more religiously engaged than the coasts and the Mountain West. Racial and ethnic patterns matter too: Black Protestant churches and Latino Catholic communities have shown more resilience in membership than predominantly white mainline Protestant denominations, which have experienced some of the steepest declines.

Evangelical Protestant churches held relatively stable numbers through much of the 2000s, but more recent Pew data suggests their share has also begun to shrink — a development that has drawn significant attention given that group's influence on American politics.

Spiritual but Unaffiliated: The Complicated Inner Life of the 'Nones'

The growth of the 'nones' does not translate neatly into a growth of secularism in a philosophical sense. Survey data repeatedly shows that a substantial portion of religiously unaffiliated Americans pray, believe in God or a higher power, or describe themselves as spiritual. Pew Research found that a majority of 'nones' believe in some form of higher power, even if they reject conventional religious labels.

This distinction matters for understanding what the trend actually means. The shift is, in many cases, away from institutional religion — congregations, clergy, formal doctrine, and communal worship — rather than away from all personal spirituality. Some researchers describe it as a privatization of faith: belief moved indoors, away from organized community structures.

“The rise of the 'nones' doesn't mean Americans have stopped being spiritual — it means they've stopped being joiners. Institutional belonging is what's in decline, not necessarily belief itself.”

— Robert Putnam, Political scientist and author of 'Bowling Alone,' on trends in American civic and religious participation

The social consequences reach beyond theology. Religious congregations have long served as one of America's primary sources of community connection, volunteerism, and mutual aid. Their decline intersects with broader concerns about social isolation, explored in more depth in reporting on the loneliness epidemic in American social life.

What This Shift Means for American Society

Religious institutions have historically done more than host Sunday services. They have anchored neighborhoods, organized disaster relief, operated food pantries, run after-school programs, and provided the kind of low-stakes regular social interaction that researchers associate with belonging and well-being. As attendance drops, those functions do not automatically transfer elsewhere.

This connects to a wider conversation about the decline of what sociologists call "third places" — shared community spaces outside home and work. The disappearance of third places and the emptying of pews are distinct phenomena, but they overlap in their effects on civic cohesion.

Religion also shapes American identity in ways that extend into politics, culture, and family life. Shifting family structures and the fragmentation of American subcultures are part of the same broad realignment of how Americans form community and meaning. None of these changes are simple losses or gains — they reflect a society working out, in real time, what holds it together.