In Croatia, Vilček families are almost entirely Croats (from Slatina ), barely Serbs. In the past century, relatively most of Croatian residents bearing this family name were born in Slatina and Zagreb.
Prevalence
About 50 people with faimily name Vilček live in Croatia today, in 20 households. There were 60 of them in the middle of the past century, and their number decreased by 10 percent. They are located in 7 Croatian counties, in 7 cities and four other places, mostly in Slatina (25), Zagreb (10), Velika Gorica (<10), Sesvete (<5), and in Petrinja (<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.