The number of people living in the Paris departement, or administrative area, dropped by an average of 11,900 people a year between 2011 and 2016, the most recent figures available, according to the national statistics agency. Paris’s urbanism institute, Apur, forecasts that the decline of the inner city population will continue for about another six years.
It is a sharp contrast with the urban renaissance that has taken place in many of the world’s major cities over the past 20 years, but Paris is not alone.
New York City shed a net 39,500 people in 2018 and 37,700 the year before, reversing the previous upward trend.
In London, the population is still growing, bolstered by births and international immigration; but when it comes to internal migration, the net movement of people out of the UK city totalled more than 100,000 in the year to June 2018.