In Croatia, Kiuk families are predominantly Serbs, rarely Croats (from Zagreb ). In the past century, relatively most of Croatian residents bearing this family name were born in Hrvatska Kostajnica area and in Zagreb.
Prevalence
About 20 people with faimily name Kiuk live in Croatia today, in 17 households. There were 0 of them in the middle of the past century, and their number multiplied. They are located in threee Croatian counties, four cities and 6 other places, mostly in Dvor in Hrvatska Kostajnica area (10), Sisak (<10), Zagreb (<5), and in Donji Javoranj (<5) and Cetvrtkovac (<5) in Hrvatska Kostajnica area.
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.