This paper presents a methodology that allows classifying the population along a socioeconomical continuum from a lower level to a higher level of social precariousness. Going beyond the complex layered issues of the poverty concept, it rather explores the notion of deprivation with social inequalities, which are observable according to primary dimensions related to socio-economical life. This paper is part of a broader research – DESTINY project – focusing on spatial and temporal evolution of social inequalities in Belgium and Luxembourg. This empirically-based project addresses socio-inequalities and precariousness in an individual perspective using disaggregated data from eight data bases; 4 from Belgium and 4 from Luxembourg. This point of view allows the analysis of the entire population from both countries on a ten-years interval (1991 and 2001). The method is based on the national censuses, the only comprehensive national data available on an individual basis. These data have been connected to the European Union - Study on Income and Living Conditions Panel (EU-SILC) that includes detailed information on household income. The EU-SILC panel has been used as a proxy that reveals social inequalities according to three individual key-dimensions in censuses. This combination giving access to economical information from EU-SILC makes possible to transpose it to national censuses for nearly 11 millions of peoples. The method ranks individuals according to their social position related to 1) education level, 2) the socio-professional status, and 3) the housing conditions. // This position has been examined in relation to each census by the following characteristics: type and size of households, age, gender and nationality. The main objective was the construction of a typology of social groups related to the position of each individual within the global social continuum. The paper will expose, after the presentation of the DESTTINY framework, the individual ranking results on the basis of temporal and spatial dimensions of precariousness evolution. These results will be discussed in relation to changes in economy, society, and respective welfare programs in Belgium and Luxembourg.