Iljkić families are Croats and they are mostly from Tuzla Region , Bosnia. In the past century, relatively most of Croatian residents bearing this family name were born in Bosanian Posavina (Gradacac area) and in Bosanian Posavina (Modrica area).
Prevalence
About 150 people with faimily name Iljkić live in Croatia today, in 60 households. There were 0 of them in the middle of the past century, and their number multiplied. They are located in the most of Croatian counties, in 20 cities and 17 other places, mostly in Zagreb (25), Josipovac (10), Rijeka (10), Slatina (10), and in Jagodno (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.