In Croatia, Šurjak families are almost entirely Croats (from the Island of Hvar ), barely Serbs, and . In the past century, relatively most of Croatian residents bearing this family name were born in Split and Zagreb.
Prevalence
About 60 people with faimily name Šurjak live in Croatia today, in 30 households. There were 70 of them in the middle of the past century, and their number decreased by 10 percent. They are located in 6 Croatian counties, in 8 cities and four other places, mostly in Split (20), Stari Grad on the Island of Hvar (20), Zagreb (15), Solin (<5), and in Orebic on the Peljesac peninsula (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1942 in source Phone Directory of the Independent State of Croatia 1942.