In Croatia, Piljaš families are predominantly Croats (from Valpovo area ), rarely Serbs. In the past century, relatively most of Croatian residents bearing this family name were born in Osijek and in Vinkovci area.
Prevalence
About 10 people with faimily name Piljaš live in Croatia today, in 7 households. There were 10 of them in the middle of the past century, and their number remains constant. They are located in threee Croatian counties, threee cities and threee other places, mostly in Vukovar (<5), Varazdin (<5), Nustar in Vinkovci area (<5), Antunovac in Osijek area (<5), and in Bizovac in Valpovo area (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over ten times, the first time 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.