Censuses have a long history in Italy, since the Roman Empire. The Censimentiare enumerations of the population classified by family units. They include names and ages of the head of the family, his wife and dependants; profession or work of the family’s head, and birth places of all the family members.
We’ll explain you how to get those documents and how they have to be consulted, in several different ways; for example, as microfilms. This is a list of Parish census (stati delle anime = "state of souls") and census made by the civil authority, (population, housing, "censimento") of Italian communes, available for consultation online.