In Croatia, Vunduk families are mainly Serbs, less frequently Croats (from Kraljevica area ). In the past century, relatively most of Croatian residents bearing this family name were born in Knin and in Kraljevica area.
Prevalence
About 30 people with faimily name Vunduk live in Croatia today, in 17 households. There were 80 of them in the middle of the past century, and their number decreased significantly. They are located in 6 Croatian counties, in 7 cities and two other places, mostly in Karlovac (<10), Vukovar (<5), Split (<5), Cres on the Island of Cres (<5), and in Fuzine in Kraljevica area (<5).
Outside Croatia
Family name Vunduk is present in four countries on two continents. The family name "Vunduk " is used by few people in the United States.
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 2007 in source Encyclopaedia of Croatian Surnames.