It is the religion of Islam. The Muslim population is 1570 millions as of October 2009. refer to link below.
Christianity is the largest religion in terms of global population, with over 2.3 billion adherents worldwide. Islam is the second largest religion, with approximately 1.9 billion followers.
The estimated population of the world in 1909 was around 1.7 billion people.
China has the largest population in the world, with over 1.4 billion people.
The world's population is approximately 7.9 billion people currently.
The estimated total world population in 1928 was around 2 billion people.
Christianity is the largest religion in terms of global population, with over 2.3 billion adherents worldwide. Islam is the second largest religion, with approximately 1.9 billion followers.
Christianity is the most popular religion in the world, at 2.1 billion members (33% of the world), followed by Islam with 1.5 billion (21%).
There are about 2 billion Christians in the world. http://www.adherents.com/Religions_By_Adherents.html
Christianity is the largest religion today. There are about 2 billion followers worldwide, which is 33% of the world population.
There is an estimated 2.18 billion people who identify as part of the Christian population in the world. Christianity is a religion practiced in over 200 countries in the world.
there is about 1.57 billion people following the Islam religion in the world
The Roman Catholic Church is the world's largest religion, with over a billion members. It includes about one-sixth of the world's population.
The world's second largest religion is Islam. It has over 1.9 billion followers worldwide.
Christianity has the highest population in the world, with over 2.3 billion followers.
There may be a billion Christians in the world out of six and a half billion people, so that makes around 15 %.
Islam is the biggest religion, they've received this result from a data in the beginning of 2010.
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