Kušek families are Croats and they are mostly from Oroslavje area. In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and Zlatar.
Prevalence
About 130 people with faimily name Kušek live in Croatia today, in 60 households. There were 170 of them in the middle of the past century, and their number decreased by 30 percent. They are located in 8 Croatian counties, in 9 cities and 15 other places, mostly in Zagreb (70), Koprivnica (15), Zlatar-Bistrica in Oroslavje area (<10), Donja Batina (<10), and in Sesvete (<10).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1917 in source List of Dignitaries, Officials and Public Servants of the Kingdom of Croatia-Slavonia.