what is the muslim population in the world 2017
Islam by country Adherents of Islam constitute the world's second largest religious group. According to a study in 2015, Islam has 1.8 billion adherents, making up about 24% of the world population.[1] Most Muslims are either of two denominations: Sunni (80-90%, roughly 1.5 billion people)[2] or Shia (10â€“20%, roughly 170-340 million people).[3] Islam is the dominant religion in the Central Asia, Indonesia, Middle East, South Asia, North Africa, the Sahel[4][5][6][7] and some other parts of Asia.[8] The diverse Asia-Pacific region contains the highest number of Muslims in the world, easily surpassing the Middle East and North Africa.[9]