This document discusses approaches to linking socio-demographic and health data to create a micro-territorial picture of low-rent housing populations. It explores recommended methodologies including using a geographic information system (GIS) to map and analyze statistical data from existing databases at dissemination areas and postal codes. The approaches aim to facilitate access to relevant data for housing and health workers and allow improved management of social services. Challenges include limitations of thematic analyses and ensuring understanding of results given interoperability issues between systems.