In Croatia, Kopornić families are Croats (from Djurdjevac area ). In the past century, relatively most of Croatian residents bearing this family name were born in Djurdjevac area.
Prevalence
About 20 people with faimily name Kopornić live in Croatia today, in 7 households. There were 10 of them in the middle of the past century, and their number doubled. They are located in only threee Croatian places: in Zdala in Djurdjevac area (10), Koprivnica (<10), and in Visnjevac (<5).
Outside Croatia
Family name Kopornić is present in this form only in Croatia.