Regions of the world with the most Muslims according to the World Christian Database (2005).

Complete List

Ranking	Region	Adherent	Percent
13	Australia/New Zealand	459,763	1.8
18	Caribbean	123,493	0.3
20	Central America	145,532	0.1
6	Eastern Africa	71,247,646	21.8
15	Eastern Asia	21,420,385	1.4
10	Eastern Europe	16,657,303	5.7
16	Melanesia	63,770	0.7
19	Micronesia (Region)	655	0.1
7	Middle Africa	12,238,737	9.5
2	Northern Africa	188,299,673	88.4
14	Northern America	5,597,898	1.6
11	Northern Europe	2,316,253	2.3
21	Polynesia	67	0.0
17	South America	1,330,030	0.3
5	South-Central Asia	642,126,764	36.1
4	South-Eastern Asia	213,581,135	36.2
12	Southern Africa	1,205,007	2.1
8	Southern Europe	9,976,199	6.5
3	Western Africa	149,032,940	48.7
1	Western Asia	206,448,865	88.7
9	Western Europe	11,223,787	6.0

Source

The data presented in QuickLists are from a variety of sources including the U.S. Census Bureau's International Data Base, the U.S. State Department's International Religious Freedom Report, the United Nations Human Development Reports, and others.

[Further information about this data source]