How many atheists are there in the world? 157,529,444. In 2007, there are an estimated 157,529,444 people worldwide who are atheists. This is according to data compiled from the 2010 World Factbook of the United&hellip
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Number of Atheists in America
How many atheists are there in America? 1,621,000. In 2008, 1,621,000 Americans reported themselves to be atheists. This represents 0.7% of the total adult population of 228,182,000 at that time. This is based on the&hellip