In Croatia, Ritossa families are mainly Croats (from Buje area ), equally Italians (also from Buje area ). In the past century, relatively most of Croatian residents bearing this family name were born in Buje area and in Porec.
Prevalence
About 20 people with faimily name Ritossa live in Croatia today, in 10 households. There were 40 of them in the middle of the past century, and their number halved. They are located in threee Croatian counties, threee cities and 7 other places, mostly in Porec (<10), in Vizinada (<10) and Bukori (<5) in Buje area, Visnjan in Porec area (<5), and in Rojci in Novigrad area (<5).
Outside Croatia
Family name Ritossa is present in 11 countries worldwide.
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.