In Croatia, Žužek families are Croats by relative majority (from Buje ), rarely Slovenes (from Slovenia ), and . In the past century, relatively most of Croatian residents bearing this family name were born in Buje and Zagreb.
Prevalence
About 10 people with faimily name Žužek live in Croatia today, in 6 households. There were 30 of them in the middle of the past century, and their number decreased significantly. They are located in five Croatian cities only: in Marusici (<5), Pula (<5), Zagreb (<5), Rovinj (<5), and in Poljana Cicka (<5).
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.