In Croatia, Čusek families are Croats (from Varazdin area ). In the past century, relatively most of Croatian residents bearing this family name were born in Varazdin area and in Varazdin.
Prevalence
About 40 people with faimily name Čusek live in Croatia today, in 14 households. There were 60 of them in the middle of the past century, and their number decreased by 30 percent. They are located in four Croatian counties, four cities and 7 other places, mostly in Opatija (<10), Varazdin (<10), Tuzno in Varazdin area (<10), Brezovljani in Krizevci area (<10), and in Cerje Tuzno (<10).
Outside Croatia
Family name Čusek (including: Cusek , Cuseck ) is present in four countries on three continents. The family name "Cusek " is used by small number of people in the United States. "Cuseck " is used by few people in Israel and few people in the United States.
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 2007 in source Encyclopaedia of Croatian Surnames.