Marjanović families are predominantly Croats and they are mostly from Nova Gradiska area , less frequently Serbs. In the past century, relatively most of Croatian residents bearing this family name were born in Middle Bosnia (Travnik area) and in Tuzla Region, Bosnia (Tuzla area). In Šuljci in Podrinje (Bosnia) every second inhabitant had the family name Marjanović.
About 3500 people with faimily name Marjanović live in Croatia today, in 1500 households. There were 1900 of them in the middle of the past century, and their number increased by 90 percent. They are located in all Croatian counties, in 97 cities and 372 other places, mostly in Zagreb (570), Davor in Nova Gradiska area (260), Rijeka (135), Osijek (120), and in Vinkovci (80).