UNITED STATES, May 14, 2015 (NBC News): The share of Americans who do not identify with a religion has grown dramatically and now surpasses every affiliation except evangelical Protestants, according to a survey released Tuesday. The Pew Research Center found that 22.8 percent of Americans were religiously unaffiliated last year — up from 16.1 percent in 2007. That group includes atheists, agnostics and those who chose “nothing in particular.”
In all, roughly seven in 10 Americans identified with some branch of Christianity, down from almost eight in 10 in 2007. The share of Americans who identify with a non-Christian faith grew to 5.9 percent, with pronounced growth among Muslims and Hindus.