What is France's ethnic percentage?

Question

i need to find the percentage for a school project

Answer 1

Since the beginning of the Third Republic (1871-1940), the state has not categorized people according to their alleged ethnic origins. Hence, in contrast to the US census, French people are not asked to define their ethnic appartenance, whichever it may be. The usage of ethnic and racial categorization is avoided to prevent any case of discrimination; the same regulations apply to religious membership data which cannot be compiled under the French Census. This classic French republican non-essentialist conception of nationality is officialized by the French Constitution, according to whom "French" is a nationality, and not a specific ethnicity.

According to Michèle Tribalat, researcher at INED, it is very difficult to estimate the number of French immigrants or those born to immigrants, because of the absence of official statistics. Only three attempts have been made: in 1927, 1942 and 1986. According to this 2004 study, among about 14 million people of foreign ascendancy (immigrants or with at least one parent or grandparent who is an immigrant), 5.2 million are from South-European ascendancy (Italy, Spain, Portugal), and 3 million come from the Maghreb.  

That works out to about 23%.