Demographics of France
According to Michel Tribalat, a researcher at INED, there were 3.5 million people of Maghrebi origin (with at least one grandparent from Algeria, Morocco or Tunisia) living in France in 2005 corresponding to 5.8% of the total French metropolitan population (60.7 million in 2005). Maghrebis have settled mainly in the industrial regions in France, especially in the Paris region. Many famous French people like Edith Piaf, Isabelle Adjani, Arnaud Montebourg, Alain Bashung, Dany Boon and many others have Maghrebi ancestry.
Islam in France
According to , a researcher at INED, an acceptance of 5 to 6 million Muslims in France in 1999 was overestimated. Her work has shown that there were 3.7 million people of "possible Muslim faith" in France in 1999 (6.3% of the total population of Metropolitan France). These 3.7 million people whose ancestry is from countries where Islam is the dominant faith may or may not be observant Muslims themselves. In 2009, she estimated that the number of people of "possible Muslim faith" in France was about 4.5 million.