Pew study: 1 in 6 worldwide follow no religion

From this morning’s New York Times:

A global study of religious adherence released on Tuesday by the Pew Research Center found that about one of every six people worldwide has no religious affiliation. This makes the “unaffiliated,” as the study calls them, the third-largest group worldwide, with 16 percent of the global population — about equal to Catholics.

The study also found a wide disparity in the median age of religious populations, with Muslims and Hindus the youngest, and Buddhists and Jews the oldest. The median age of the youngest group, Muslims, was 23, while the median for Jews was 36.

Over all, Christians (including Catholics) are the largest religious group, with 2.2 billion people, about 32 percent of the world’s population. They are followed by Muslims, with 1.6 billion, about 23 percent. There are about one billion Hindus, about 15 percent of the global population, and nearly half a billion Buddhists, about 7 percent.

The study, “The Global Religious Landscape,” is a snapshot of the size and distribution of religious groups as of 2010, and does not show trends over time.

“Something that may surprise a lot of people,” said Conrad Hackett, a primary researcher on the report, “is that the third-largest religious group, after Christians and Muslims, is the religiously unaffiliated. There may have been some guesses floating out there before, but this is the first time there are numbers based on survey data analyzed in a rigorous and scientific way.”

Read the rest.


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