The main goal of this paper was to determine if one main factor could drive the social distribution of population in the municipality of Vernier. Using GeoDa, we were able to show correlation between unemployment rates, median revenue per household linked to some extent to population density with the location and proportion of polluted sites. Fig. 8 resume the results and allow us to validate the latest hypothesis : pollution of soil looks to be a significant driver of the social distribution of population in Vernier. This paper acts as a basis to the bigger study we are doing : establish a vulnerability index. It reveals that population try, it they can afford it, to avoid living close to polluted soil, even if they are not considered as dangerous by the Office Fédéral de l'EnVironnement - OFEV (otherwise, remediation of soil must be engaged). This reveals that pollution of soils cannot be neglected in the computation of our vulnerability index. The map we created will then help us to define the weight we will give in our index to the following bucket of variables : economy, environment, security, wealth.