In Croatia, Ruzzai families are Italians (from Umag ). In the past century, relatively most of Croatian residents bearing this family name were born in Umag.
Prevalence
Only a few people with faimily name Ruzzai live in Croatia today, in two households only. They are located in one Croatian city only, in Umag (<5).
Outside Croatia
Family name Ruzzai is present in four countries on three continents.