In Croatia, Kujek families are almost entirely Croats (from Valpovo area ), barely Serbs. In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and Osijek. In Cret Bizovački in Valpovo area every seventieth inhabitant had the family name Kujek.
Prevalence
About 40 people with faimily name Kujek live in Croatia today, in 18 households. There were 40 of them in the middle of the past century, and their number remains constant. They are located in 6 Croatian counties and threee other places, mostly in Zagreb (15), in Cret Bizovacki (10), Samatovci (10) and Bizovac (<5) in Valpovo area, and in Rijeka (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over five times, the first time 1942 in source Phone Directory of the Independent State of Croatia 1942.