Dušek families are mainly Croats and they are mostly from Cazma , but often Czechs (from Garesnica area ). In the past century, relatively most of Croatian residents bearing this family name were born in Bjelovar and Zagreb. In Hercegovac in Garesnica area every seventieth inhabitant had the family name Dušek.
Prevalence
About 90 people with faimily name Dušek live in Croatia today, in 40 households. There were 120 of them in the middle of the past century, and their number decreased by 20 percent. They are located in 7 Croatian counties, in 10 cities and 16 other places, mostly in Zagreb (15), Sibovac in Daruvar area (10), Bjelovar (<10), Veliki Grdjevac in Grubisno Polje area (<10), and in Kutina (<10).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over five times, the first time 1902 in source Hartmann's General List of Apartments in Zagreb.