World's Muslim Population

Nearly one-fifth of the world’s population today is Muslim. The Muslim population is a diverse community of believers spanning the globe. Over fifty countries have Muslim-majority populations, while other groups of believers are clustered in minority communities on nearly every continent.

Although Islam is often associated with the Arab world and the Middle East, fewer than 15% of Muslims are Arab.

Countries With The Largest Muslim Populations (2008)

Sources:

• U.S. Census Bureau, International Data Base, updated 15 December 2008
• CIA Online World Factbook, updated 2 April 2009