In Croatia, Viljetić families are almost entirely Croats (from Djakovo area ), very rarely Romanians. In the past century, relatively most of Croatian residents bearing this family name were born in Djakovo and in Djakovo area.
Prevalence
About 30 people with faimily name Viljetić live in Croatia today, in 10 households. There were 10 of them in the middle of the past century, and their number tripled. They are located in threee Croatian counties, four cities and two other places, mostly in Satnica Djakovacka in Djakovo area (<10), Vinkovci (<10), Djakovo (<10), Zagreb (<5), and in Visnjevac (<5).
Outside Croatia
Family name Viljetić is present in this form only in Croatia.
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1917 in source List of Dignitaries, Officials and Public Servants of the Kingdom of Croatia-Slavonia.