In Romanian archaeology, the aspects related to demography are poorly presented. The present study combines the demographic data already known in the archaeological literature with geophysical surveys in order to obtain additional information relating to the social organization and population size. The research is focused on the Cucuteni A3 settlement of Războieni–Dealul Mare, that has benefited over the years from several geophysical surveys. The results regarding the spatial organisation and the delineation of the living space are impressive. From the data obtained we can achieve some demographic information.