In Croatia, Bilas families are Croats (from Ploce area ). In the past century, relatively most of Croatian residents bearing this family name were born in Ploce area and in Makarska.
Prevalence
About 70 people with faimily name Bilas live in Croatia today, in 30 households. There were 60 of them in the middle of the past century, and their number increased by 30 percent. They are only located in in 7 Croatian cities and threee other places, mostly in Gradac in Ploce area (25), Zagreb (20), Split (<10), Podaca in Ploce area (<10), and in Mursko Sredisce (<10).