Interviewed residents of 5 sections of Milan, Italy: Baggio, Barona, Comasina, Forlanini, and Perrucchetti. The 5 sections were selected according to the following criteria: (1) genesis of the neighborhood (compact municipality, pre-war settlement spurred by industrial development, recent industrial development), (2) type of residential areas (subsidized versus non-subsidized), (3) morphological characteristics of the section (unplanned versus planned development), and (4) degree of efficiency of infrastructures and services (according to their efficiency index). Questions probed respondents' socioeconomic mobility, political awareness, relationships with neighbors, places of origin, and familiarity with Milan and its cultural-political life. In addition, respondents were asked about their knowledge of events in the neighborhood, the types of leisure activities in which they participated there, their family life, and their levels of involvement in political and social activities in their neighborhood. A subsample of 450 respondents were reinterviewed with a 2nd questionnaire that probed more deeply into political and associational participation.