The Fourth Presbyterian Church in Chicago, Illinois. The number of Americans unaffiliated with a religion increased to almost 20 percent from about 15 percent five years ago. Photographer: Raymond Boyd/Michael Ochs Archives/Getty Images
The Fourth Presbyterian Church in Chicago, Illinois. The number of Americans unaffiliated with a religion increased to almost 20 percent from about 15 percent five years ago. Photographer: Raymond Boyd/Michael Ochs Archives/Getty Images