Petraš families are Croats and they are mostly from Bosnian Krajina. In the past century, relatively most of Croatian residents bearing this family name were born in Bosnian Krajina (Sipovo area) and in Vrbovec area. In Brdo in Bosnian Krajina every seventh inhabitant had the family name Petraš.
Prevalence
About 120 people with faimily name Petraš live in Croatia today, in 50 households. There were 50 of them in the middle of the past century, and their number more than doubled. They are located in the most of Croatian counties, in 23 cities and 19 other places, mostly in Zagreb (20), Kaptol in Pozega area (10), Dubrava in Vrbovec area (<10), Sesvete (<10), and in Karlovac (<10).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over ten times, the first time 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.