This article collects statistics about atheists in America and worldwide.
Research has shown that most atheists tend to lean to the left in terms of their politics. About 69% of non believers are Democrats while 56% consider themselves to be politically liberal. In keeping with this finding 92% of atheists support same sex marriage and 87% approve of legal abortion. Atheists are also more likely to be young (the median age being 34), male (68%), white (78%), and educated (with 43% having a college degree).
According to the Pew Research Center in terms of the U.S. adult population the average age of Christians was 49 in 2014 which is up from 46 in 2007. This comes as a contrast to atheists whose average age fell from 36 in 2007 to 34 just seven years later. American Jews remained steady over this time period with a median age of 50.
Around the world:
The nation with the largest population of atheists in the world is China. Statistics have shown that approximately 75% of Chinese citizens, some 1,029,390,000 people, identify as atheists. Another Asian country, Japan, ranks second with 46% of its population (58,342,720 people) who publicly identify themselves as being atheists. Rounding out the top three is Germany with 38% or 30,855,050 citizens subscribing to atheism.
It is interesting that such a large fraction of the Chinese and Japanese public identify as atheists, compared to the US where only 3.1% did so as recently as 2014. This may be because in the US, atheists still remain one of the most hated groups, causing many atheists to adopt more acceptable labels as nonreligious, agnostics, nonbelievers, unaffiliated, spiritual, humanist, secularist, and so on. The number of people who call themselves nonreligious is pretty high, as you can see by this breakdown by state, the northeast and northwest states having the highest percentages, close to 50%.