From The God Delusion:
1) 1,074 Fellows of the Royal Society were emailed
2) 23 percent responded
3) They were asked various propositions, such as, “I believe in a personal God, that is one who takes an interest in individuals, hears and answers prayers, is concerned with sin and transgressions, and passes judgement.”
4) They were invited to choose a number from 1 to 7 indicating strong disagreemant to strong agreemant.
5) 3.3% agreed strongly with the statement that a personal god exists (chose 7), while 78.8% strongly disagreed (chose 1).
In the United States the National Academy of Sciences members exhited theism to the tune of 10%.