Petranović families are almost entirely Croats and they are mostly from Delnice. According to some sources they are from Donji Kosinj, very rarely Serbs. In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and Nova Gradiska.
Prevalence
About 550 people with faimily name Petranović live in Croatia today, in 250 households. There were 570 of them in the middle of the past century, and their number remains constant. They are located in the most of Croatian counties, in 37 cities and 46 other places, mostly in Zagreb (145), Delnice (40), Rijeka (35), Belisce (25), and in Nova Gradiska (20).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over forty times, the first time 1749 in source 18th Century Census.