In Croatia, Šiždrak families are Croats (from Dugo Selo area ). In the past century, relatively most of Croatian residents bearing this family name were born in Sibenik and Zagreb.
Prevalence
About 10 people with faimily name Šiždrak live in Croatia today, in five households only. They are located in only four naselja i to in Zagreb (<10), Sibenik (<5), Donje Polje (<5), and in Gracec in Dugo Selo area (<5).
Outside Croatia
Family name Šiždrak is present in this form only in Croatia.