Americans are deeply religious people—and atheists are no exception. Western Europeans are deeply secular people—and Christians are no exception.

These twin statements are generalizations, but they capture the essence of a fascinating finding in a new study about Christian identity in Western Europe. By surveying almost 25,000 people in 15 countries in the region, and comparing the results with data previously gathered in the U.S., the Pew Research Center discovered three things.

First, researchers confirmed the widely known fact that, overall, Americans are much more religious than Western Europeans. They gauged religious commitment using standard questions, including “Do you believe in God with absolute certainty?” and “Do you pray daily?”

Second, the researchers found that American “nones”—those who identify as atheist, agnostic, or nothing in particular—are more religious than European nones. The notion that religiously unaffiliated people can be religious at all may seem contradictory, but if you disaffiliate from organized religion it does not necessarily mean you’ve sworn off belief in God, say, or prayer.

The third finding reported in the study is by far the most striking. As it turns out, “American ‘nones’ are as religious as—or even more religious than—Christians in several European countries, including France, Germany, and the U.K.”

“That was a surprise,” Neha Sahgal, the lead researcher on the study, told me. “That’s the comparison that’s fascinating to me.” She highlighted the fact that whereas only 23 percent of European Christians say they believe in God with absolute certainty, 27 percent of American nones say this...read more​​​​​​​