In Croatia, Lazzari families are predominantly Croats (from Labin area ), rarely Italians. In the past century, relatively most of Croatian residents bearing this family name were born in Labin area.
Prevalence
Only a few people with faimily name Lazzari live in Croatia today, in five households only. There were 20 of them in the middle of the past century, and their number halved. They are located in three Croatian cities only: in Zagreb (<5), Rijeka (<5), and in Lopud (<5).
Outside Croatia
At least four families with this surname emigrated from Croatia to the United States. Family name Lazzari is present in 52 countries worldwide.
In the sources analysed in the project Acta Croatica so far, the name is mentioned over thirty times, the first time 1902 in source Hartmann's General List of Apartments in Zagreb.