In Croatia, Sosnik families are generally Croats (from Djakovo area ), rarely Serbs. In the past century, relatively most of Croatian residents bearing this family name were born in Slavonski Brod and in Djakovo area.
Prevalence
About 10 people with faimily name Sosnik live in Croatia today, in five households only. There were 10 of them in the middle of the past century, and their number remains constant. They are located in four Croatian cities only: in Zagreb (<5), Slavonski Brod (<5), Zapresic (<5), and in Djakovo (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over five times, the first time 1942 in source Phone Directory of the Independent State of Croatia 1942.