Kurilj families are usually Croats and they are mostly from Vrgorac , rarely Serbs. In the past century, relatively most of Croatian residents bearing this family name were born in Vrgorac and Osijek. In Mijaca in Vrgorac every eighth inhabitant had the family name Kurilj.
Prevalence
About 130 people with faimily name Kurilj live in Croatia today, in 50 households. There were 90 of them in the middle of the past century, and their number increased by 40 percent. They are located in 9 Croatian counties, in 12 cities and 11 other places, mostly in Orebic on the Peljesac peninsula (40), Makarska (35), Osijek (25), Zagreb (<10), and in Stilja (<10).
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.