International audienceThe category of gentrification has only recently began to be used for the study of French cities. The process through which working-class neighbourhoods became areas of upper-middle-class residence was earlier discussed as embourgeoisement, largely referred to as state intervention and seen as the effect of the permanent preference for central locations of higher categories. The detailed empirical examination of the Paris metropolis shows that such changes have indeed been occurring steadily over the last decades, but that the largest number of neighbourhoods experiencing that change of social profile are to be found in the first ring of banlieues and not in the central city. The analysis of the social profile of gentr...