Bilušić families are Croats and they are mostly from Knin area. In the past century, relatively most of Croatian residents bearing this family name were born in Knin area and in Sibenik. In Ljubotić in Knin area every third inhabitant had the family name Bilušić.
Prevalence
About 430 people with faimily name Bilušić live in Croatia today, in 170 households. There were 200 of them in the middle of the past century, and their number doubled. They are located in the most of Croatian counties, in 27 cities and 51 other places, mostly in Zagreb (130), Zaton (35), Sibenik (35), Slavonski Brod (20), and in Zadar (15).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over ten times, the first time 1902 in source Hartmann's General List of Apartments in Zagreb.