Islam is the fastest growing religion on the Planet | Pew Research

Over the next four decades, Christians will remain the largest religious group, but Islam would be fastest growing religion on planet. 

Islam, the world's fastest-growing faith, will leap from 1.6 billion (in 2010) to 2.76 billion by 2050, according to the Pew study. At that time, Muslims will make up nearly one-third of the world's total projected population of about 9 billion people.

Worldwide, the Hindu population is projected to rise by 34%, from a little over 1 billion to nearly 1.4 billion, roughly keeping pace with overall population growth. Jews, the smallest religious group for which separate projections were made, are expected to grow 16%, from a little less than 14 million in 2010 to 16.1 million worldwide in 2050.

Study collected data from 234 countries and territories; predicts fate of five major faiths -- Buddhism, Christianity, Hinduism, Judaism and Islam -- as well as folk religions and atheists.

According to Pew Research Center, If current trends continue, by 2050 …

• The number of Muslims will nearly equal the number of Christians around the world.
• Atheists, agnostics and other people who do not affiliate with any religion – though increasing in countries such as the United States and France – will make up a declining share of the world’s total population.
• The global Buddhist population will be about the same size it was in 2010, while the Hindu and Jewish populations will be larger than they are today.
• In Europe, Muslims will make up 10% of the overall population.
• India will retain a Hindu majority but also will have the largest Muslim population of any country in the world, surpassing Indonesia.
• In the United States, Christians will decline from more than three-quarters of the population in 2010 to two-thirds in 2050, and Judaism will no longer be the largest non-Christian religion. Muslims will be more numerous in the U.S. than people who identify as Jewish on the basis of religion.
• Four out of every 10 Christians in the world will live in sub-Saharan Africa.

If current demographic trends continue, however, Islam will nearly catch up by the middle of the 21st century. Between 2010 and 2050, the world’s total population is expected to rise to 9.3 billion, a 35% increase.1 Over that same period, Muslims – a comparatively youthful population with high fertility rates – are projected to increase by 73%. The number of Christians also is projected to rise, but more slowly, at about the same rate (35%) as the global population overall.

• In the coming decades, 106 million people are projected to leave Christianity. (46 million will convert to Christianity, offsetting the losses a little.)
• The number of countries with Christian majorities will drop to 151, as Christians are projected to decrease in Australia, Benin, Bosnia-Herzegovina, France, the Netherlands, New Zealand, the Republic of Macedonia and the United Kingdom.
• Muslims are expected to make up more than 50% of the population in 51 countries, including the Republic of Macedonia and Nigeria.