n the XIV and XV centuries the census was tallied by taking into consideration the family unit (commonly referred to in this period as a fuoco) whose composition varied from 5 to 8 people. In the beginning, the numeration of the fuochi was a census conducted by public officials going house to house. At first the census was carried out every three years, later every fifteen, but the periodicity was not well respected. The system, based on the numeration of fuochi (family units), was popular from 1443 to 1806.

According to the numbers of fuochi or people we can note the variation of social status, economic status and cultural status of the town. As of 1730, the population of Morrone was no longer recorded in terms of family units. Between 1648 and 1669 there was a stark demographical drop. The reality is that the bubonic plague in 1656 decimated the population. Since 1901, one notes a demographical diminishment that in recent years has notably accentuated.

From 1532 to 1669 the census is expressed in fuochi (family units).