In Croatia, Černac families are Croats by relative majority (from Buje ), equally Italians (from Buje area ), and very rarely Serbs. In the past century, relatively most of Croatian residents bearing this family name were born in Pula and Buje.
Prevalence
About 60 people with faimily name Černac live in Croatia today, in 20 households. There were 10 of them in the middle of the past century, and their number multiplied. They are located in two Croatian counties, in 7 cities and 6 other places, mostly in Fazana (15), Brcici (<10), Buje (<10), Rijeka (<5), and in Porec (<5).