American Religious Identification Survey 2008
The Institute for the Study of Secularism in Society and Culture (ISSSC)
The Leonard E. Greenburg Center for the Study of Religion in Public Life
Trinity College, Hartford, Connecticut
The American population self-identifies as predominantly Christian but Americans are slowly becoming less Christian.
Based on their stated beliefs rather than their religious identification in 2008, 70% of Americans believe in a personal God, roughly 12% of Americans are atheist (no God) or agnostic (unknowable or unsure), and another 12% are deistic (a higher power but no personal God).
The “Nones” (no stated religious preference, atheist, or agnostic) continue to grow, though at a much slower pace than in the 1990s, from 8.2% in 1990, to 14.1% in 2001, to 15.0% in 2008.
Northern New England has now taken over from the Pacific Northwest as the least religious section of the country, with Vermont, at 34 percent “Nones,” leading all other states by a full 9 points.
One more reason to love New England.
Mormons make up a minuscule 1.4% of the total US population. That number has not changed since 1990 despite a massive missionary effort (Part IA, Table 3).