In Croatia, Petrkač families are Croats (from Sisak area ). In the past century, relatively most of Croatian residents bearing this family name were born in Sisak and in Sisak area.
Prevalence
About 10 people with faimily name Petrkač live in Croatia today, in four households only. There were 20 of them in the middle of the past century, and their number halved. They are located in only two Croatian places: in Sisak (<10) and Lijeva Luka in Sisak area (<10).
Outside Croatia
Family name Petrkač is present in this form only in Croatia.
