Number of practicing Christians in the U.S. has decreased by about half since 2000

The number of Christians in America who are actively practicing their faith has fallen by about half since 2000, according to a new survey.

survey commissioned by the Barna Group indicates what the report calls a “dramatic change” in American Christianity. The Barna Group qualifies a “practicing Christian” by a respondent “calling oneself a Christian, strongly prioritizing faith and regular church attendance.” By these measures, only 25 percent of respondents qualify as practicing, versus 45 percent in 2000.

The survey also showed a doubling in the number of American atheists and agnostics, and that an equal number of respondents became non-practicing Christians as those who left the faith completely.