In Croatia, Rossa families are mainly Croats (from Porec ), less frequently Italians (from Slavonski Brod ). In the past century, relatively most of Croatian residents bearing this family name were born in Pula and Slavonski Brod.
Prevalence
Only a few people with faimily name Rossa live in Croatia today, in two households only. There were 10 of them in the middle of the past century, and their number decreased significantly. They are located in only threee naselja i to in Zagreb (<5), Porec (<5), and in Perci (<5).
Outside Croatia
At least one family with this surname emigrated from Croatia to the United States. Family name Rossa is present in 66 countries worldwide.
In the sources analysed in the project Acta Croatica so far, the name is mentioned over five times, the first time 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.