Christianity in the U.S. is quickly shrinking and may no longer be the majority religion within just a few decades, research finds

Christianity has remained at the forefront of the nation's political and social conversations for centuries — but new research shows that could be changing. 

A new report by Pew Research Center and the General Social Survey published on Tuesday found that the large numbers of people in the U.S who practice Christianity are declining. The religion's demographic has been dwindling since the 1990s, the report said, as many adults transition to an identity of atheist, agnostic or "nothing in particular." 

In the early '90s, about 90% of people in the U.S. identified as Christians, the report said. In 2020, Christians accounted for about 64% of the U.S. population, including children. Meanwhile, those who are not affiliated with a religion has grown from 16% in 2007 to 30% in 2020, according to the research. All other religions, including Judaism, Islam, Hinduism and Buddhism, accounted for about 6% in 2020.