About 3.7 to 5.5 million people in France are Muslim. This is equal to 5 to 9 percent of France’s total population.
Answered - 51 days ago at 2:10pm on Jul 31 2012
http://www.chacha.com/question/what-percentage-of-france-is-muslim
France’s problem is that the vast majority of Muslims are concentrated in the south, in a few major cities. Marseilles is virtually a Muslim run city..