Regarding belief in the biblical God and in God in general, according to "the latest Gallup Poll,
belief in God dipped to 81 percent, down six percentage points from
2017, the lowest since Gallup first asked the question in 1944." See https://www.washingtonpost.com/religion/2022/06/24/poll-americans-belief-god-is-dropping/ for my source about that; the Gallup web page referred in the first link confirms the poll results mentioned in the above news article. The article says that the poll says "Only 68 percent of adults ages 18-29 said they believed in God (compared with 87 percent of Americans age 65 or older.)"
The article also says the following.
'Belief
in God is correlated more closely with conservatism in the United
States, and as the society’s ideological gap widens, it may be a
contributor to growing polarization. The poll found that 72 percent of
self-identified Democrats said they believed in God, compared with 92
percent of Republicans (with independents between at 81 percent).
In
recent years there has been a rise in the number of Americans who
acknowledge being Christian nationalists — those who believe Christian
and American identities should be fused.
“It
could be that the increase in the number of atheists is a direct result
of Christian nationalism,” said Ryan Cragun, a sociologist at the
University of Tampa who studies the nonreligious. “They seem to be
dominating the rhetoric. I wouldn’t be surprised if there is
legitimately backlash against it and people saying, ‘You know what? I’m
an atheist.’ ” '
