In Croatia, Petričak families are Croats (from Zagreb ). In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb.
Prevalence
About 20 people with faimily name Petričak live in Croatia today, in 9 households. There were 10 of them in the middle of the past century, and their number doubled. They are located in two Croatian cities only, in Zagreb (20) and Mokrice (<5).
Outside Croatia
Family name Petričak (including: Petrichak , Petricak and Petricák ) is present in 6 countries on two continents.