Due to law restrictions, the French republic prohibits the questioning of religious affiliation in official censuses, which explains the big difference between the estimations that have been established up to now on the number of Muslims in France.

A Pew Research Center study estimated 4.7 million Muslims in France in 2010, and forecasted 6.9 million in 2030, this would make them reach 10% of the total French population by 2030.

But according to Yves Manou, author of "France's Muslim Demographic Future" published in 2017, the number of Muslim individuals in France will soon reach 15 to 17 million, several official and political sources join this opinion, Azouz Begag - politician and former Minister - already estimated in 2011 that Muslims in France number 15 to 20 million, representatives of religious communities as well as the Front National (French political party) do agree on these figures.

It is a well-known fact that, in France, Islam is positioned second, just after Christianity, and France happens to be the 1st European country in number and percentage of Muslims, furthermore the number of faithful Muslims have been increasing in the country for thirty years.

The phenomenon of immigration, which marked the 1960s, was the main factor in the sudden and rapid growth of the number of Muslims in France. Today we find French Muslims being from second, third and fourth generation.

French Muslims are mostly Arabs, of North African origin, or more precisely Maghreb, (in the strict sense, the Maghreb means Morocco, Algeria and Tunisia), but they can also have non-Arab origins, These minorities are often Turks, Kurds, Senegalese, Malians, Indonesians or Bosnians ...