Demographics of France
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 1 January 2018, 67.19 million people lived in France (67,186,638), including all the five overseas departments (2,141,000), but excluding the overseas collectivities and territories (604,000). 65,017,000 of these lived in Metropolitan France, which is mainland France located in Europe.
2010 redistricting of French legislative constituencies
Since the last redistricting effort in 1986, 577 constituencies of the National Assembly of France have been distributed among the Departments of France. In France, constituencies are divided in proportion to their population, based on 1986 census figures, each consisted of 108,000 inhabitants. In theory, the number of total constituencies located within a département is supposed to be proportional to the larger population within that département compared to the total population of France. (In total, there are 101 départements, which are grouped into 22 metropolitan and five overseas regions.) However, using French Republican tradition, each département must have at least two constituencies regardless of population. This, however, distorts the proportionality of national representation, with 23 départements being under-represented (including 5 of "two deputies" départements) and 28 départements over-represented. Effectively, 51 out of 101 départements were poorly represented based on the results of the most recent census.