Metropolitan France
According to INSEE, 65,018,000 people lived in metropolitan France as of January 2018, while 2,790,000 lived in overseas France, for a total of 67,808,000 inhabitants in the French Republic. Thus, metropolitan France accounts for 95.9% of the French Republic's population.
Immigration to France
In 2008, according to The National Institute of Statistics (INSEE, for its acronym in French), there were 12 million immigrants and their direct descendants (2nd generation) making up about 20% of the population. with an immigrant defined as a foreign born person without French citizenship at birth. Without considering citizenship at birth, people not born in metropolitan France and their direct descendants made up 30% of the population aged 18–50 in metropolitan France in 2008.