A 2005 poll, conducted by Newsweek and Beliefnet, asked: "What is your current religion?"

Evangelical Protestant—33 percent
Non-Evangelical Protestant—25 percent
Roman Catholic—22 percent
Other Christian—5 percent
Jewish—1 percent
Muslim—1 percent
Other, non-Christian—3 percent
Atheist/Agnostic—6 percent
Religion undesignated—4 percent

28 percent of those ages 18–39 were evangelicals; 9 percent were atheists.
36 percent of those ages 40–59 were evangelicals; 5 percent were atheists.
36 percent of those over 60 were evangelicals; 3 percent were atheists.