The aim of this paper is to study occupational segregation by gender in Spain, which is a country where occupational segregation explains a large part of the gender wage gap. As opposed to previous studies, this paper measures not only overall segregation, but also the segregation of several population subgroups. For this purpose, this paper uses new measures recently proposed by Alonso-Villar and Del Rio (Local versus overall segregation measures, Documento de Traballo 0802, Departamento de Economia Aplicada, Universidade de Vigo, 2008). Moreover, two decompositions of their local segregation curves are proposed, which allows us to go further in the empirical analysis.