In Croatia, Mattossovich families are predominantly Croats (from Rovinj area ), rarely Italians (from Porec area ). In the past century, relatively most of Croatian residents bearing this family name were born in Porec area.
Prevalence
Only a few people with faimily name Mattossovich live in Croatia today, in two households only. There were 0 of them in the middle of the past century, and their number remains constant. They are located in only two naselja i to in Funtana in Rovinj area (<5) and Perini in Porec area (<5).
Outside Croatia
Family name Mattossovich is present in four countries on two continents.
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 2007 in source Encyclopaedia of Croatian Surnames.