The Carnegie Endowment for International Peace (CEIP) estimates that Islam tops the list of the 6 fastest-growing religions in the world. The largest Muslim populations, obviously, are centered in what CEIP terms as 'fast-growing' countries like Indonesia, Bangladesh, Pakistan, India, Egypt, and Iran, but they also claim that it's the fastest-growing religion in Europe, due, in part, to the huge influx of Muslim immigrants, and their higher birth rates as opposed to the static birth rates of native populations.
Some believe that 9/11 was a major catalyst in the burgeoning interest in Islam, and that conversion rates have increased substantially since that day, but according to this 1997 CNN article interest was just as heightened back then, as was an increasing shift from moderate to conservative religiosity. Either way conversion rates have exploded worldwide.
It is also considered to be the fastest-growing religion in the U.S. with estimates of from 5 to 7 million believers nationwide. And some experts reckon that up to 25,000 people convert to Islam each year. They certainly make conversion (or "reversion" as Muslims call it) incredibly easy. To become a Muslim all you need is a few witnesses at a ceremony called Shahada, and to pledge the following: "I bear witness that there is no deity except Allah and that Muhammad is his messenger" and you're done. You can witness these Shahadas on You tube and YoutubeIslam . I have watched quite a few of these videos and was rather confused regarding the interchangeable use of "revert" and "convert", until I read the following:
'Revert' is actually a more appropriate term than 'convert', since all human beings are born pure. By embracing Islam, one returns to the original and sinless state in which God created him or her. However we
have used the term convert to avoid any possible ambiguity.
In other words, Muslims believe everyone is born Muslim and will, eventually, find their way back, either through conversion [or coercion], and it is their fervent and heartfelt desire that all mankind embrace and accept Islam. Muslims are compelled to spread the message of Islam (Da'wah): “Invite (all) to the Way of thy Lord with wisdom and beautiful preaching; and argue with them in ways that are best and most gracious: for thy Lord knows best, who have strayed from His Path, and who receive guidance.” (An-Nahl: 125).
'About 21% of all people on earth follow Islam. The religion is currently in a period of rapid growth. If current trends continue Islam will become the most popular world religion sometime in the mid-21st century.'
Commonly cited estimates of the Muslim population in 2007, range from 900 million to 1.3 billion. Approximately 85% are Sunni and 15% are Shi'a, with a small minority belonging to other sects. Some 30–40
countries are Muslim-majority, and Arabs account for around 20% of all Muslims worldwide. South Asia and Southeast Asia contain the most populous Muslim countries, with Indonesia, Pakistan, Bangladesh, and India having more than 100 million adherents each. According to U.S. government figures, in 2006 there were 20 million Muslims in China. In
the Middle East, the non-Arab countries of Turkey and Iran are the largest Muslim-majority countries; in Africa, Egypt and Nigeria have the most populous Muslim communities. Islam is the second largest religion after Christianity in many European countries.
Major Religions of the World
Ranked by Number of Adherents compiled by adherents.com
(Sizes shown are approximate estimates, and are here mainly for the
purpose of ordering the groups, not providing a definitive number. This list is
sociological/statistical in perspective.)
1. Christianity: 2.1 billion
2. Islam: 1.3 billion
3. Secular/Nonreligious/Agnostic/Atheist: 1.1 billion
4. Hinduism: 900 million
5. Chinese traditional religion: 394 million
6. Buddhism: 376 million
7. primal-indigenous: 300 million
8. African Traditional & Diasporic: 100 million
9. Sikhism: 23 million
10. Juche: 19 million
11. Spiritism: 15 million
12. Judaism: 14 million
13. Baha'i: 7 million
14. Jainism: 4.2 million
15. Shinto: 4 million
16. Cao Dai: 4 million
17. Zoroastrianism: 2.6 million
18. Tenrikyo: 2 million
19. Neo-Paganism: 1 million
20. Unitarian-Universalism: 800 thousand
21. Rastafarianism: 600 thousand
22. Scientology: 500 thousand
partial H/T Housewife4Palestine