Islam is the fastest growing religion in the world. In fact, if current trends continue, Muslims will surpass Christians as the world’s largest religious group in the second half of this century, according to the Pew Research Center.
As of 2010, there were an estimated 1.6 billion Muslims around the world, making up the majority of the population in 49 countries.
Between 2010 and 2015, 31 percent of all babies born around the world were born to Muslims.
Muslims also have the youngest average age of all the major religious groups, Pew researches noted. In 2015, the median age of Muslims around the globe was 24 whereas the median age of non-Muslims was 32.
Those factors coupled together have led to the population projections in the second half of this century.