Three in 10 Americans interpret the Bible literally, saying it is the actual word of God. That is similar to what Gallup has measured over the last two decades, but down from the 1970s and 1980s. A 49% plurality of Americans say the Bible is the inspired word of God but that it should not be taken literally, consistently the most common view in Gallup's nearly 40-year history of this question. Another 17% consider the Bible an ancient book of stories recorded by man.None of these views has changed much since 1977 according to the charts accompanying the article at the link. The high point in the percentage of Americans favoring a literal interpretation of the Bible was 40%, recorded in 1980 and 1984. The low point was 27% in 2001.
The data are charted according to church attendance, educational attainment, income level, whether the respondent was protestant, Catholic, or none, and whether the respondent was Republican or Democrat, politically conservative or liberal.
As one might expect, those with low church attendance, high education, high income, no religious preference, and liberal Democrat tended to view the Bible as a collection of legends and myths. Those with high church attendance, less education, lower income, and who are protestant, conservative Republicans tended to see the Bible as either the actual word of God or as inspired by God. The latter group, however, those who see the Bible as in some sense the word of God, comprises 79% of those polled.
The report concludes with this summary:
In general, the dominant view of Americans is that the Bible is the word of God, be it inspired or actual, as opposed to a collection of stories recorded by man. That is consistent with the findings that the United States is a predominantly Christian nation and that Americans overwhelmingly believe in God.Be that as it may, perhaps the really important question is how relevant that belief is to how people live their lives.