Whatever the prevailing assumptions about forthcoming mortality, fertility and migration trends, one thing is sure, France's population is going to age: according to the central model, which involves extrapolating the trends witnessed over the past two decades, the proportion of people aged 60 or above will rise to 31.1% in 2030 versus 20.6% in 2000. This phenomenon will be more or less marked across France's regions and departments owing in part to internal migratory movements. The ageing of the population will affect most the less urbanised departments of Central and Western France and of the Massif Central region, as well as the Northeast of the country. It will be less marked along the Mediterranean coast, in the Rhône-Alpes region and in the Île-de-France region. Among France's overseas territories, only Guyana will be relatively unaffected.