There are many opinions about the direction and force of religion in the US. I’ve seen any number of folks using all sorts of statistics to make all sorts of points, usually in the favor of one and to the detriment of another religions slant (I include Atheism in that, because a 180° turn still leaves you in the same old rut). The Pew Forum is as close to an unbiased view as we’re likely to find.
There will, of course, be some who disagree with that statement because Pew’s findings disagree with what they want to believe. Whatever.
Based on interviews with more than 35,000 American adults, this extensive survey by the Pew Forum on Religion & Public Life details the religious makeup, religious beliefs and practices as well as social and political attitudes of the American public. This online section includes dynamic tools that complement the full report. For a video overview and related material, go to the resource page.