Vučak families are usually Croats and they are mostly from Omis area , barely Serbs. In the past century, relatively most of Croatian residents bearing this family name were born in Omis area and in Sibenik.
Prevalence
About 580 people with faimily name Vučak live in Croatia today, in 240 households. There were 490 of them in the middle of the past century, and their number increased by 20 percent. They are located in almost all Croatian counties, in 41 cities and 57 other places, mostly in Cista Velika in Omis area (70), Split (70), Vodice (60), Zagreb (45), and in Sibenik (30).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over ten times, the first time 1917 in source List of Dignitaries, Officials and Public Servants of the Kingdom of Croatia-Slavonia.