In the work carried out by the statistician and demographer Ugo Giusti (1873-1953), the concept of territory reading in its urban and rural dimensions is fundamental. From the early 19th century onwards, Giusti particularly concentrates on turning two unquestionable principles into an absolute must in the statistical and demographic research method: 1) The territory, in the interaction of its geo-morphological characteristics and its anthropic stratification, having the role of matrix of phenomena which show up on it. 2) The demographic and statistic survey which relates the data of a phenomenon to a specific territorial context can only be considered a valid scientific result if the identification of the context in relation to the given phenomenon has also been carried out . The latter applied takes on a particular importance in the study plan system for demographic research and more generally for statistics. Giusti identifies in the circumscription the dynamic dimension of the dividing up of the city and the static dimension, which identifies the resulting physical status, maintaining homogeneity in the physical, social and economic characteristics, yet distinguishing them from neighbouring circumscriptions. With this method we can obtain a useful application on various scales like the distinction of city boundaries and the identification of homogeneous districts on a regional scale.