Only 50% of Americans Belong to a Church

Only half of Americans aged 18 or older belong to a church, synagogue, or mosque, according to Gallup survey. The 50 percent of 2018 is a record low and down from 70 percent in 1999. Behind the decline, says Gallup, is the growing share of the population without a religious preference. That share climbed from 8 to 19 percent in the past two decades. Not only is church membership declining in successively younger generations, but it is also falling over time within generations...

Church membership in 2016–2018 (and 1998–2000)
Millennials: 42% (NA)
Gen Xers: 54% (62%)
Boomers: 57% (67%)
Older Americans: 68% (77%)

In 2016–2018, church membership was lowest among men (47 percent), people under age 30 (41 percent), Hispanics (45 percent), people in the West (43 percent), and liberals (37 percent). Church membership was highest among people aged 65 or older (64 percent), non-Hispanic Blacks (65 percent), people in the South (58 percent), Republicans (69 percent), and conservatives (67 percent).

Source: Gallup, U.S. Church Membership Down Sharply in Past Two Decades