The aim of this analysis is to establish a socio-demographic differentiation for Mexico City using a methodology that presents two main contributions: first, it applies a geo-demographic typology based on life styles or socioeconomic levels taken from geo-marketing databases; and second, it uses highly disaggregated census information at block levels that has only been applied in very few studies. Six clusters and several segregation indices were calculated. Conclusions show that Mexico City has features of the traditional residential segregation model with elite groups highly concentrated in specific zone, while other socio-demographic groups such as the middle and working classes present a marked dispersion in urban space, more in accordance with the proposals of the new dispersed and fragmented urban model.