The poll notes that only 72% of Democrats, 62% of liberals and 68% of young people believe in God.
"Belief in God is highest among political conservatives (94%) and Republicans (92%), reflecting that religiosity is a major determinant of political divisions in the U.S., it adds.
Looking at belief in God region-wise, the poll found that the South has the highest number with 86%, but it is down from 93% in 2017. The region with the lowest number is the East, with 78%.
Gallup also asked whether God hears prayers and whether God intervenes when people pray.