Religious affiliation, attendance and personal importance in America

How much religion matters in people's lives

Gallup offered respondents three ways to describe religion's importance. In 2025, 47 percent chose very important, 25 percent fairly important and 28 percent not very important. For one in four adults, the middle response best described religion's place in their lives. Including that response helps us see the range of personal significance behind the national figures.

Over the longer term, the share calling religion very important has declined substantially. It was 75 percent in 1952 and 58 percent in 2012. In recent years, it has leveled off below half. The share describing religion as not very important has also been steady at 28 percent each year since 2022, though this is more than twice the level recorded in the early 2000s.

These were repeated surveys of the population, rather than a record of the same people's lives unfolding over decades. A stable national percentage can include people moving toward religion and people moving away from it. The trend describes the balance of responses, while the reasons for a particular person's changing relationship with religion remain part of their own account.

The current results therefore include both continuity and change. Religion remains personally important to a large part of the population, while fewer adults give it the central place reflected in the strongest response. Recent stability sits within that longer shift.

Different patterns within the national picture

To examine differences among groups, Gallup combined results from 2001 through 2005 and compared them with results from 2021 through 2025. These five-year periods give a broader picture than a single year's reading. Most groups reported a decline in religion's importance, but the amount of change and the importance religion retained varied considerably.

Among Black adults, the share describing religion as very important fell from 85 percent to 63 percent. This was one of the largest declines, yet Black adults remained among the groups most likely to give that answer. A substantial change over time could coexist with religion continuing to hold a central place for most people in a group.

Political differences widened. Among Democrats, the share calling religion very important fell from 60 percent to 37 percent. Among Republicans, it changed little, from 66 percent to 64 percent. These findings describe how people in each group answered the question. They do not establish what caused either pattern.

Religious traditions also followed different paths. In the more recent period, 67 percent of Latter-day Saints and 64 percent of Protestant or other Christian adults described religion as very important. Among Catholics, the figure was 50 percent, close to the earlier period's 53 percent. Jewish adults were the exception to the broader downward pattern, with the share calling religion very important increasing from 22 percent to 32 percent.

Other differences cut across these identities. Half of adults without a college degree described religion as very important, compared with 40 percent of graduates. The figure was 52 percent among adults in the lowest income third and 39 percent among those in the highest. Women were more likely than men to give this answer, and Southerners were more likely than adults in the other regions Gallup reported. The national average encompasses communities where religion remains central to most people and others where fewer give it that role. These groups also overlap. The same person can appear in the figures for an age group, a region, a political affiliation and a religious tradition. The comparisons describe those different views of the population without isolating what each characteristic contributes.

The religious identities people report

Nearly a quarter of adults, 24 percent, reported no religious affiliation in 2025. That followed four years in which the figure stayed between 21 and 22 percent. In 1948, only 2 percent gave this response. Gallup uses the term religious “Nones” for people who report no affiliation. That answer identifies a relationship to religious categories. It leaves open the person's beliefs, sources of meaning and participation in other communities.

Most Americans continued to identify with a religion. Forty-four percent described themselves as Protestant or nondenominational Christian, 20 percent as Catholic and 9 percent identified with another religion. The historical changes differed across these broad categories. In 1948, 69 percent identified as Protestant, while 22 percent identified as Catholic. The Protestant share has changed much more than the Catholic share over that period.

Religious affiliation records an identity people report. It does not specify membership in a particular congregation or describe the place of every belief and practice in someone's life. For understanding the communities people participate in, the attendance question adds a different kind of information.

The rhythm of religious attendance

In 2025, 31 percent of adults said they attended services every week or almost every week. Another 10 percent attended about once a month, while 57 percent seldom or never attended. The question covered services at a church, synagogue, mosque or temple.

The long-term pattern shows a change in how regularly this shared practice appears in American life. In 1992, 44 percent attended weekly or almost weekly, while 41 percent seldom or never attended. Monthly attendance was 10 percent then, the same as in 2025. That continuity concerns the share of the population, rather than a group whose habits were known to remain unchanged. The largest changes have been at the more frequent and less frequent ends of participation.

From the early 1990s through 2008, a majority of adults reported attending at least monthly. Since 2018, a majority have said they seldom or never attend. Religious services remain a regular part of life for many Americans, but a smaller share of the population now takes part frequently.

The combined seldom-or-never category also contains different relationships to participation. Among adults under 30, 21 percent said seldom and 40 percent said never. Occasional attendance and no attendance can look alike in a headline figure, while involving different routines in someone's life.

A recurring service can provide an occasion to participate with a congregation. The attendance figures describe how often people take part in that practice, while the importance figures describe what religion means to them. Keeping those questions separate helps us recognize both personal significance and the routines through which people share religious life. The report does not show how the two answers overlap for individual respondents. Nor does frequency tell us whether someone feels known or valued when they attend. Understanding a person's experience includes the meaning of being there as well as how often they go.

Generational change and the people within each generation

Age differences appeared across all three measures. In the 2021–2025 results, 33 percent of adults aged 18 to 29 described religion as very important, compared with 58 percent of those aged 65 and older. In the 2025 affiliation results, 35 percent of adults under 30 reported no religion, compared with 14 percent of those 65 and older. Adults aged 30 to 49 and 50 to 64 fell between them, at 29 percent and 18 percent respectively.

Gallup identifies generational replacement as a major part of the decline in affiliation. Younger generations with larger unaffiliated shares gradually make up more of the adult population, while older generations with smaller unaffiliated shares make up less. The overall distribution can change through that process as well as through changes in individuals' religious identities. Comparing younger and older adults in the same year does not show how today's younger adults will change as they age. Gallup's generational explanation concerns the population pattern, rather than a prediction about any one person's future.

The age comparisons also contain considerable variation. In 2025, a quarter of adults under 30 reported attending services weekly or almost weekly, compared with 37 percent of adults 65 and older. Seldom or never attending was the more common experience in both groups, reported by 61 percent of younger adults and 51 percent of older adults.

Older adults were more religiously engaged on average, while frequent attendance remained part of life for many younger adults. Within either age group, people differed in whether religious services formed part of their routine. Knowing someone's age or religious identity provides context. Understanding the role of religion in their life also involves the importance they give it and the practices they take part in.