Countries with the Largest Number of Muslims

	Estimated 2009 Muslim Population	Percentage of Population that is Muslim	Percentage of World Muslim Population
Indonesia	202,867,000	88.2%	12.9%
Pakistan	174,082,000	96.3	11.1
India	160,945,000	13.4	10.3
Bangladesh	145,312,000	89.6	9.3
Egypt	78,513,000	94.6	5.0
Nigeria	78,056,000	50.4	5.0
Iran	73,777,000	99.4	4.7
Turkey*	73,619,000	~98	4.7
Algeria	34,199,000	98.0	2.2
Morocco*	31,993,000	~99	~2
* Data for Turkey and Morocco come primarily from general population surveys, which are less reliable than censuses or large-scale demographic and health surveys for estimating minority-majority ratios (see Methodology). As a result, the percentage of the population that is Muslim in these two countries is rounded to the nearest integer.

Pew Research Center’s Forum on Religion & Public Life • Mapping the Global Muslim Population, October 2009

The bulk of the world’s Muslim population – more than six-in-ten (62%) – is located in Asia, a region that, for the purposes of this report, includes not only East Asian countries such as China but also countries as far west as Turkey. (For a complete breakdown of countries by region, see World Muslim Population by Region and Country.)