According to the PEW Research Center 60% percent of Americans say that “humans and other living things have evolved over time", but only 32% believe that human evolution is due to natural processes.
"About half of those who express a belief in human evolution take the view that evolution is “due to natural processes such as natural selection” (32% of the American public overall). But many Americans believe that God or a supreme being played a role in the process of evolution. Indeed, roughly a quarter of adults (24%) say that 'a supreme being guided the evolution of living things for the purpose of creating humans and other life in the form it exists today.'"Assuming that the 24% who believe God played a role in directing evolution and the 33% who believe "humans and other living things have existed in their present form since the beginning of time" also believe God had a role in creation, you have 57% of Americans who believe in some form of intelligent design.
White mainline Protestants (36%/36%) and white Catholics (33%/33%) are split over whether God had a part in evolution or not. Both Black Protestants (25%/17%) and White evangelicals (18%/8%) heavily favor divine intervention. Hispanic Catholics believe natural processes prevailed (19%/27%).