In Croatia, Zvocak families are Croats (from Donji Miholjac ). In the past century, relatively most of Croatian residents bearing this family name were born in Donji Miholjac and Nasice.
Prevalence
About 30 people with faimily name Zvocak live in Croatia today, in 12 households. There were 30 of them in the middle of the past century, and their number remains constant. They are only located in in 7 Croatian cities and another small place , mostly in Donji Miholjac (<10), Osijek (<10), Split (<5), Rovinj (<5), and in Zagreb (<5).
Outside Croatia
Family name Zvocak is present in this form only in Croatia.