In Croatia, Bilušković families are almost entirely Croats (from Ilok ), barely Serbs. In the past century, relatively most of Croatian residents bearing this family name were born in Vukovar and in Rama, Bosnia (Prozor area).
Prevalence
About 40 people with faimily name Bilušković live in Croatia today, in 17 households. They are located in threee Croatian counties and threee other places, mostly in Vukovar (10), Pula (<10), Sarengrad (<10), Zagreb (<5), and in Opatovac in Ilok area (<5).
Outside Croatia
Family name Bilušković is present in this form only in Croatia.