According to Gallup, 46 percent of Americans do not believe in evolution.
Gallup has been asking this, with same wording, since 1982, and it always comes out pretty much the same, with a plurality of respondents choosing this from among three possible responses:
“God created human beings, pretty much in their present form, at one time within the past 10,000 years or so.”
An alternative response suggests that humans have evolved from less advanced forms of life but God has guided the process. Thirty-two percent of respondents picked that one. Fifteen percent said humans had evolved and God had nothing to do with the process.
Gallup has polled the identically worded question 11 times. The biblical answer comes out on top every time, always in the 40s, although it did experience a jump from 40 percent last year to 46 percent this year, but the trend is remarkably stable over 30 years.
The breakdowns are about what you would expect. Frequent church attendees and Republicans are most likely to give the biblical answer, although the gap by party ID isn't as big as I would have guessed.
This graphic is lifted from Gallup's website: