In Croatia, Kobak families are Croats (from Ozalj area ). In the past century, relatively most of Croatian residents bearing this family name were born in Vinkovci and in Ozalj area.
Prevalence
About 10 people with faimily name Kobak 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 only threee naselja i to in Vinkovci (10), Zagreb (<5), and in Restovo in Ozalj area (<5).