Bilaver families are Croats and they are mostly from Biograd na Moru area. In the past century, relatively most of Croatian residents bearing this family name were born in Zadar and in Biograd na moru area.
Prevalence
About 210 people with faimily name Bilaver live in Croatia today, in 80 households. There were 100 of them in the middle of the past century, and their number doubled. They are only located in in 7 Croatian cities and 8 other places, mostly in Skabrnja in Biograd na moru area (125), Zadar (45), Zagreb (15), Turanj in Biograd na moru area (<5), and in Cakovec (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 2007 in source Encyclopaedia of Croatian Surnames.