In Croatia, Borovnjak families are almost entirely Croats (from Oroslavje area ), very rarely Serbs. In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and Kutina.
Prevalence
About 60 people with faimily name Borovnjak live in Croatia today, in 20 households. There were 60 of them in the middle of the past century, and their number remains constant. They are located and 5 other Croatian places, mostly in Zagreb (25), Kutina (10), Kupljenovo (<10), Luka in Oroslavje area (<10), and in Sisak (<10).
Outside Croatia
Family name Borovnjak is present in 11 countries on three continents.