Are you a none?

Their numbers have more than doubled in a decade, to nearly 30 million. Organized as a religious denomination, they would trail only Catholics and Baptists in members. They are the "nones," named for their response to a question in public opinion polls: "What is your religion, if any?" ... Nones are especially prevalent in the Pacific Northwest. In Oregon and Washington, where 21 percent and 25 percent, respectively, claim no particular faith, nones outnumber any single religious category.

Source: O'Keefe, Mark. "Number of `Nones,' Those Who Claim No Religion, Swells in U.S." Newhouse News Service 2003.