Stjepanović families are generally Croats and they are mostly from Bosnian Posavina , less frequently Serbs. In the past century, relatively most of Croatian residents bearing this family name were born in Bosanian Posavina (Brcko area) and in Banja Luka Region, Bosnia (Banja Luka area). In Jasenik in North Herzegovina nearly every inhabitant had the family name Stjepanović.
Prevalence
About 1600 people with faimily name Stjepanović live in Croatia today, in 660 households. There were 690 of them in the middle of the past century, and their number more than doubled. They are located in almost all Croatian counties, in 67 cities and 185 other places, mostly in Zagreb (230), Slavonski Brod (90), Rijeka (65), Sesvete (65), and in Ivankovo in Vinkovci area (65).