In Croatia, Ilenić families are Croats (from Oroslavje area ). In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and Velika Gorica. In Velika Mlaka in Velika Gorica every thirtieth inhabitant had the family name Ilenić.
Prevalence
About 50 people with faimily name Ilenić live in Croatia today, in 20 households. There were 50 of them in the middle of the past century, and their number remains constant. They are located in four Croatian counties, threee cities and 11 other places, mostly in Velika Mlaka (15), Zagreb (10), Prigorje Brdovecko in Zapresic area (<10), Brezik in Virovitica area (<5), and in Poljanica Bistranska in Oroslavje area (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1929 in source Emigration Commission Zagreb.