Petrušić families are mainly Croats and they are mostly from Bosanske krajine. According to some sources they are from Dubrovnik area, very rarely Serbs. In the past century, relatively most of Croatian residents bearing this family name were born in Bosnian Krajina (Kotor Varos area) and in Herzegovina (Ljubuski area). In places Podbrđe and Šibovi in Bosnian Krajina every seventh inhabitant had the family name Petrušić.
Prevalence
About 1100 people with faimily name Petrušić live in Croatia today, in 410 households. There were 290 of them in the middle of the past century, and their number multiplied. They are located in all Croatian counties, in 65 cities and 113 other places, mostly in Zagreb (185), Ogulin (60), Ploce (50), Donji Prolozac in Imotski area (35), and in Osijek (35).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over a hundred times, the first time 1750 in source 18th Century Census.