How Many Americans Have a Religious Affiliation?

A 2012 poll showed that almost 20% of all adults in the United States aren't affiliated with any religion. The percentage was even higher among younger people, as over one-third of those under 30 responded that they did not consider themselves to be a part of a particular religion. It should be noted, however, that non-affiliation with a religion does not mean that a person lacks faith in a deity and some polls show that as many as 89% of Americans do believe in God.

More about religious affiliation in the US:

• While younger people may be less likely to participate in organized religion, their involvement often increases after they have children of their own.


• In 2010, the Roman Catholic church claimed nearly 59 million members, the largest number of adherents of any organized religious body in the United States.


• While 78% of those who are unaffiliated with any religion believe that organized religious bodies provide community for their members, 78% also believe that religious bodies are overly concerned with power and money.