In Croatia, Biuković families are predominantly Croats (from Zagreb ), rarely Serbs. In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and Sisak.
Prevalence
About 20 people with faimily name Biuković live in Croatia today, in 13 households. There were 10 of them in the middle of the past century, and their number doubled. They are located in threee Croatian counties, four cities and four other places, mostly in Zagreb (20), Tkon on the Island of Pasman (<5), Slabinja in Hrvatska Kostajnica area (<5), Zadar (<5), and in Sisak (<5).
Outside Croatia
Family name Biuković is present in 6 countries on two continents.