According to Pew, a third of Americans actually see Christmas as more of a cultural holiday, while others said it was both, or gave no opinion. Even the “religiously unaffiliated” get in the spirit: among atheists or agnostics 87 percent say they still celebrate Christmas. The country is also aging out of the religious aspects. Younger adults were the least likely to see Christmas as a religious holiday, at 39 percent, compared with 66 percent of those aged 65 or older.