Petrak families are Croats and they are mostly from Pregrada. In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and Pregrada. In Vrbovečki Pavlovec in Vrbovec every fourth inhabitant had the family name Petrak.
Prevalence
About 560 people with faimily name Petrak live in Croatia today, in 230 households. There were 590 of them in the middle of the past century, and their number decreased by 10 percent. They are located in the most of Croatian counties, in 37 cities and 60 other places, mostly in Zagreb (175), Vrbovecki Pavlovec (50), Pregrada (20), Donji Andrijevci in Djakovo area (15), and in Brinje in Senj area (15).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over forty times, the first time 1683 in source Catholic Church Parish Records.