Petrac families are Croats and they are mostly from Velika Gorica area. In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and in Petrinja area. In Podvornica in Velika Gorica area every second inhabitant had the family name Petrac.
Prevalence
About 130 people with faimily name Petrac live in Croatia today, in 60 households. There were 90 of them in the middle of the past century, and their number increased by 40 percent. They are located in 7 Croatian counties, in 9 cities and 15 other places, mostly in Brezane Lekenicke in Petrinja area (25), Kotoriba in Prelog area (20), Velika Gorica (15), Podvornica in Velika Gorica area (15), and in Zagreb (<10).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over forty times, the first time 1669 in source Catholic Church Parish Records.