Petriško families are Croats and they are mostly from Donja Stubica. In the past century, relatively most of Croatian residents bearing this family name were born in Donja Stubica and Zagreb.
Prevalence
About 90 people with faimily name Petriško live in Croatia today, in 30 households. There were 70 of them in the middle of the past century, and their number increased by 30 percent. They are located in four Croatian counties, four cities and 5 other places, mostly in Donja Podgora (30), Zagreb (25), Donja Stubica (25), Kapela Dvor in Virovitica area (<10), and in Oroslavje (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 2007 in source Encyclopaedia of Croatian Surnames.