In Croatia, Bonča families are generally Croats (from Pula area ), very rarely Slovenes (from Pula ). In the past century, relatively most of Croatian residents bearing this family name were born in Herzegovina (Mostar area) and in Slovenia.
Prevalence
About 10 people with faimily name Bonča 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 only threee naselja i to in Zagreb (<10), Pula (<10), and in Vintijan in Pula area (<5).