In Croatia, Biluš-Gagić families are Croats (from Kastela area ). In the past century, relatively most of Croatian residents bearing this family name were born in Kastela area and in Split.
Prevalence
About 20 people with faimily name Biluš-Gagić live in Croatia today, in 9 households. There were 0 of them in the middle of the past century, and their number multiplied. They are located in only four Croatian places: in Kastel Stafilic (10), Kastel Stari (<10), Kastel Novi (<10), and in Kastel Kambelovac (<5).
Outside Croatia
Family name Biluš-Gagić is present in this form only in Croatia.
