Numbers, Facts and Trends Shaping Your World

If the U.S. had 100 people: Charting Americans’ religious affiliations

As of 2023, there were roughly 262 million adults in the United States. That includes about 162 million Christians and 76 million people who do not have a religion. These are big numbers that can make it difficult to fully understand the American religious landscape.

But what if we imagined the U.S. as a small town of 100 people instead of a country with hundreds of millions of people? In this analysis, we use Pew Research Center’s 2023-24 Religious Landscape Study (RLS) to show what religious affiliation would look like in that town:

You can also read about what the U.S. religious landscape looked like a decade ago, based on our 2014 RLS.

About this research

This Pew Research Center analysis examines what share of U.S. adults identify with various religions, using a hypothetical population of 100 people to make the distribution easier to understand. We also explore how religious affiliation varies by demographic traits such as age and gender.

Why did we do this?

Pew Research Center conducts high-quality research to inform the public, journalists and leaders. Studying religion in the United States is a key part of the Center’s long-standing research.

Learn more about Pew Research Center.

How did we do this?

This analysis includes findings from a survey of 36,908 U.S. adults who participated in the Center’s 2023-24 Religious Landscape Study (RLS). The survey was conducted from July 17, 2023-March 4, 2024. The survey’s overall margin of error is plus or minus 0.8 percentage points.

Here are the questions used for this analysis, the topline and the survey methodology.

Religious affiliation

A chart showing the U.S. as 100 people: 62 Christians, 29 religious ‘nones,’ 2 Jews and 1 Muslim.

If the U.S. had 100 people, 62 of them would be Christians. They would include:

  • 23 evangelical Protestants
  • 19 Catholics
  • 11 mainline Protestants
  • 5 people who identify with historically Black Protestant denominations
  • 2 members of the Church of Jesus Christ of Latter-day Saints (widely known as Mormons)
  • 2 who identify with other Christian groups, including Jehovah’s Witnesses and many other small groups

Meanwhile, 29 people would be religiously unaffiliated. This group – sometimes called the religious “nones” – is made up of people who describe themselves as atheists, agnostics or “nothing in particular” when it comes to religion.

Seven people would identify with non-Christian religions:

  • 2 people would be Jewish
  • 1 each would be Muslim, Buddhist and Hindu
  • 2 would represent a wide variety of other religions (Baha’is, Sikhs, Wiccans, etc.)

Religious affiliation by age

In our hypothetical town, more Christians would be ages 50 and older (35) than under 50. Eighteen Christians would be in their 30s and 40s, while nine would be between ages 18 and 29.

The age balance would be reversed for religious “nones,” with 20 under age 50 and fewer than 10 ages 50 and older.

A chart showing the U.S. as 100 people: More ‘nones’ than Protestants among those ages 18 to 29.

Religious affiliation by gender

Among the 100 adults, there would be 34 Christian women and 28 Christian men. Other groups’ gender makeup would be roughly equal. For example, 15 “nones” would be men and 14 would be women.

A chart showing the U.S. as 100 people: More women than men are Protestant.

Religious affiliation by race and ethnicity

Among the 100 people, 25 would be White and Protestant, and 19 would be White and religiously unaffiliated. Seven would be Black and Protestant, including some Black Protestants who identify with evangelical or mainline denominations. Another seven would be Hispanic Catholics.

A chart showing the U.S. as 100 people: 38 are White Christians, while 19 are White ‘nones’.

Religious affiliation by region

If the U.S. had 100 people, there would be about as many Protestants living in the South (20) as in all other parts of the country combined. There would be nine Protestants in the Midwest, seven in the West and five in the Northeast.

The nation’s Catholics would be pretty evenly spread out across the Northeast (5), West (5), South (5) and Midwest (4).

A chart showing the U.S. as 100 people: In the Northeast, equal numbers are Protestants, Catholics and religious ‘nones’.

Note: This is an update of a post originally published Nov. 14, 2016. Here are the questions used for this analysis, the topline and the survey methodology.