Petanović families are Croats and they are mostly from Hrvatska Kostajnica area. In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and Slavonski Brod.
Prevalence
About 110 people with faimily name Petanović live in Croatia today, in 50 households. There were 100 of them in the middle of the past century, and their number increased by 20 percent. They are located in the most of Croatian counties, in 18 cities and 17 other places, mostly in Zagreb (20), Slavonski Brod (10), Vinkovci (10), Kapelica (<10), and in Tomica in Slavonski Brod area (<10).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1925 in source Emigration Commission Zagreb.