Michael Lipka

If Hillary Clinton ends up being the Democratic Party’s nominee for president, her politics won’t be the only thing many Republicans and Democrats disagree about during the coming campaign.

The phrase “spiritual but not religious” has become widely used in recent years by some Americans who are trying to describe their religious identity.

In the last two decades, several religious groups have moved to allow same-sex couples to marry within their traditions.

Millennials are less religious than older Americans and less likely to identify with a religious group, and those traits are reflected in the way they celebrate Christmas.

Religious "nones" make up 23% of U.S. adults, up from 16% in 2007. And only 27% of those “nones” are absolutely certain about God’s existence, down from 36% in 2007.

The vast majority of Americans still believe in God, but there are strong signs that many are less certain about this belief than in years past.

Making up just 0.5% of U.S. adults, Seventh-day Adventists are extremely devout and are one of the country's most diverse religious groups by race and ethnicity.

Our new report finds that whether U.S. adults are becoming more or less religious depends, in part, on how religious observance is measured.

An even greater share – 29% – say they have felt in touch with someone who has already died.

62% of U.S. Catholics think the church should allow Catholics who have been divorced and remarried without an annulment to receive Communion.