Gallup reports:
PRINCETON, NJ -- This Christmas season, 78% of Americans identify with some form of Christian religion, a proportion that has been declining in recent decades. The major reason for this decline has been an increase in the percentage of Americans claiming no religious identity, now at 13% of all adults.
Below are two charts.
Gallup polled another question also:
Me: Check the Gallup website for interpretive comments on these polls and two others: on church membership and on whether or not religion is out of date. I found interesting Gallup's concluding comments:
Although a little more than one out of five Americans do not identify with a Christian faith, the Christmas season has ramifications for a broader segment of society. A Gallup survey conducted last year showed that 93% of all American adults said they celebrated Christmas.