In Croatia, Zanchi families are Croats (from the Island of Vis ). In the past century, relatively most of Croatian residents bearing this family name were born in Split and Dubrovnik.
Prevalence
About 20 people with faimily name Zanchi live in Croatia today, in 15 households. There were 10 of them in the middle of the past century, and their number doubled. They are located in four Croatian cities only: in Split (10), Zagreb (<10), Sibenik (<5), and in Komiza on the Island of Vis (<5).
Outside Croatia
At least one family with this surname emigrated from Croatia to the United States. Family name Zanchi is present in 35 countries worldwide.
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.