The demography of France is monitored by the Institut national d'études démographiques (INED) and the Institut National de la Statistique et des Études Économiques (INSEE). As of the 1 January 2017, almost 67 million people lived in the French Republic (66,991,000), including all the five overseas departments (2,132,000), but excluding the overseas collectivities and territories (604,000).[3] 64,859,000 of these lived in Metropolitan France, the part of France located in Europe.
France was historically Europe's most populous nation. During the Middle Ages, more than one quarter of Europe's total population was French; by the 17th century, this had decreased slightly to one fifth. By the beginning of the 20th century, other European nations, such as Germany and Russia, had caught up with and overtaken it. However, the country's population sharply increased with the baby boom following World War II.
According to INSEE, since 2004, 200,000 immigrants entered annually into the country. One out of two was born in Europe and one in three in Africa. Between 2009 and 2012, the number of Europeans entering France increased sharply (+ 12% per year on average).
The national birth rate, after dropping for a time, began to rebound in the 1990s and currently the country's fertility rate is close to the replacement level. According to a 2006 INSEE study, "The natural increase is close to 300,000 people, a level that has not been reached in more than thirty years."
Among the 802,000 newborns in metropolitan France in 2010, 80.1% had two French parents, 13.3% had one French parent, and 6.6% had two non-French parents. For the same year, 27.3% of newborns in metropolitan France had at least one foreign-born parent and 23.9% had at least one parent born outside of Europe (parents born in overseas territories are considered as born in France). Between 2006 and 2008, about 40% of newborns in France had one foreign-born grandparent (11% born in another European country, 16% born in the Maghreb and 12% born in another region of the world).