As of 2010, Christianity was by far the world’s largest religion, with an estimated 2.2 billion adherents, nearly a third (31%) of all 6.9 billion people on Earth. Islam was second, with 1.6 billion ...

As the chart above shows, Muslims are part of the only religious community that is projected to increase at a rate faster than the world population as a whole. After 2070, Pew predicts ...

First, here is a chart of the world's major ... about five percent of their country's population, but it's a remarkable toehold for the world's largest religion in the world's largest country.

For information about how data for each country or territory were collected and analyzed, see Data Sources by Region. Sources include national censuses, demographic and health surveys, and other ...