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Grant Gallicho May 12, 2015

The percentage of Americans who call themselves Christian has dropped significantly since 2007, according to a new survey by the Pew Research Center. Mainline Protestants and Catholics have experienced the largest losses (-3.4 percent and -3.1 percent, respectively), Evangelicals the smallest (-.9 percent, just over the margin of error). While the dip in Christian affiliation has occurred across all age cohorts, the younger you are, the more likely you are not to identify with any religious tradition. While non-Christian faiths saw modest bumps in affiliation (+.5 percent for Muslims, +.3 for Hindus), no group grew more than the “nones,” who make up nearly 23 percent of the population–a gain of 6.7 percent since 2007. There are now more nones than Catholics.

Mainline Protestants have suffered the largest losses in absolute numbers–there are 5 million fewer today than there were in…