One-Fifth of Americans Have No Religious Affiliation

A new ABC News poll finds the number of adults expressing no religious affiliation has risen from 12% in 2003 to 21% of all adults in 2017. That includes 3% who say they’re atheists, 3% agnostic and 15% who say they have no religion.

The largest shifts during this 15-year period include 16-point increases among young adults (age 18 to 29) and political liberals.