In Croatia, Birov families are generally Croats (from Nova Gradiska area ), very rarely Serbs. In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and in Nova Gradiska area.
Prevalence
About 20 people with faimily name Birov live in Croatia today, in 15 households. There were 40 of them in the middle of the past century, and their number halved. They are located in 7 Croatian counties, in 6 cities and 5 other places, mostly in Zagreb (<10), Sesvete (<10), Gornji Draganec (<5), Sisak (<5), and in Velika Gorica (<5).
