In Croatia, Petrik families are generally Croats (from Slavonski Brod area ), very rarely Hungarians (from Beli Manastir area ), and . In the past century, relatively most of Croatian residents bearing this family name were born in Slavonski Brod and in Pleternica area.
Prevalence
About 80 people with faimily name Petrik live in Croatia today, in 40 households. There were 70 of them in the middle of the past century, and their number increased by 20 percent. They are located in 9 Croatian counties, in 13 cities and 7 other places, mostly in Slavonski Brod (15), Zagreb (15), Bukovlje in Slavonski Brod area (15), Bjelovar (10), and in Zadar (<10).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over a hundred times, the first time 1729 in source Catholic Church Parish Records.