In Croatia, Kuštek families are Croats (from Zlatar ). In the past century, relatively most of Croatian residents bearing this family name were born in Zlatar and Zagreb. In Završje Belečko in Zlatar every ninth inhabitant had the family name Kuštek.
Prevalence
About 40 people with faimily name Kuštek live in Croatia today, in 14 households. There were 40 of them in the middle of the past century, and their number remains constant. They are only located in four Croatian cities and 10 other places, mostly in Zagreb (10), Djurdjenovac in Nasice area (<10), Zavrsje Belecko (<10), Sesvete (<10), and in Gornja Selnica (<10).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over five times, the first time 1925 in source Emigration Commission Zagreb.