In Croatia, Sušek families are Croats (from Umag ). In the past century, relatively most of Croatian residents bearing this family name were born in Sisak and Zupanja.
Prevalence
About 10 people with faimily name Sušek live in Croatia today, in four households only. There were 0 of them in the middle of the past century, and their number multiplied. They are located in two Croatian counties, threee cities and threee other places, mostly in Sisak (<10), Moscenica (<5), Petrinja (<5), Umag (<5), and in Vilanija (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over five times, the first time 1917 in source List of Dignitaries, Officials and Public Servants of the Kingdom of Croatia-Slavonia.