Map: Global Christianity
A comprehensive demographic study finds that there are 2.18 billion Christians of all ages around the world, representing nearly a third of the estimated 2010 global population of 6.9 billion. Christians are also geographically widespread, and no single region can indisputably claim to be the center of global Christianity.
Map: The Future of the Global Muslim Population
A new Pew Forum report on the size, distribution and growth of the global Muslim population finds that the world’s Muslim population is expected to increase by about 35% in the next 20 years, but it is expected to grow at a slower pace in the next two decades than it did in the previous two decades.