Pilaš families are Croats and they are mostly from Novi Vinodolski area. In the past century, relatively most of Croatian residents bearing this family name were born in Novi Vinodolski area and in Rijeka.
Prevalence
About 90 people with faimily name Pilaš live in Croatia today, in 50 households. There were 160 of them in the middle of the past century, and their number decreased by 40 percent. They are located in 8 Croatian counties, in 10 cities and 6 other places, mostly in Zagreb (20), Rijeka (15), Tribalj in Novi Vinodolski area (10), Dramalj (<10), and in Viskovci (<10).
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.