In Croatia, Kubiček families are predominantly Croats (from Ilok area ), rarely Hungarians (from Vukovar ), and barely Czechs (from Doboj area, BiH ). In the past century, relatively most of Croatian residents bearing this family name were born in Vinkovci and Vukovar.
Prevalence
About 50 people with faimily name Kubiček live in Croatia today, in 18 households. There were 70 of them in the middle of the past century, and their number decreased by 30 percent. They are located and threee other Croatian places, mostly in Vinkovci (20), Cakovci in Ilok area (10), Zagreb (<10), Nustar in Vinkovci area (<10), and in Varazdin (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1927 in source Emigration Commission Zagreb.