The combination of the spatial concentration of resources (jobs and facilities) and their attractiveness to populations helps determine polarization sites and their zones of influence: the geographical concentration of jobs and the commuting that they involve are behind the definition of Zoning into urban areas and rural employment zones; grouping amenities together (shops and services) as well as the reasons for visits to them shows how territory is organized into living basins animated by market towns and small cities meeting the local populations’ needs to various degrees.