In Croatia, Perosa families are generally Italians (from Pula ), rarely Croats (also from Pula ). In the past century, relatively most of Croatian residents bearing this family name were born in Pula.
Prevalence
Only a few people with faimily name Perosa live in Croatia today, in three households only. There were 10 of them in the middle of the past century, and their number remains constant. They are only located in in one Croatian city and another small place , mostly in Pula (<10) and Fazana (<5).
Outside Croatia
Family name Perosa is present in 18 countries worldwide. "Perossa " is used by some 200 people in Italy , about 200 in Argentina , and small number of people in the United States.
In the sources analysed in the project Acta Croatica so far, the name is mentioned over ten times, the first time 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.