In 2000, belief in a personal "God" was at 86% in the United States with belief in some sort of a "Universal Spirit" at 8% and belief in neither a "God," nor a spirit (a.k.a. atheism) being at 5%.
Today, in 2008, the numbers have changed a little bit with 78% believing in a personal "God" (an 8% decrease), 15% believing in some sort of spirit, but not a personal god, (a 7% increase), and 6% being atheist (1% increase).
Other trends regarding religious belief show that the more educated a person is, the less likely they are to believe in a personal "God."
9% of those with a post-graduate degree are atheist, with another 19% in this group not having a personal "God," but some sort of belief in the potential of a universal spirit. Leaving 71% with a belief in a personal "God."
88% of those with a high school degree or less believe in "God."
Keep in mind this is just for America, belief in a "God" is lower in most of Europe.
Interestingly, the vast majority of leading scientist are not religious.
Corey shared this website with me and I have been addicted ever since, here's a video worth watching from Ted.com:
Some arguments against religious belief (CLICK ME)