The United States is a highly religious nation. Almost all Americans believe in God (83%) or a higher power (12%). But scientists are not your typical American. While only 4% of the public say they do not believe in a deity or higher power, a plurality of scientists do not (41%). Scientists are also far more likely to identify religiously as unaffiliated than is the general public (48% vs. 48%) or as atheist (17% vs. 2%). However, unlike the general population, younger scientists are more likely than older scientists to have a belief in God or a higher power.
SOURCE: Pew Research Center