Arambašić families are usually Croats and they are mostly from Herzegovina , rarely Serbs. In the past century, relatively most of Croatian residents bearing this family name were born in Bosanian Posavina (Derventa area) and in Osijek. In Drinovačko Brdo in Herzegovina every fifth inhabitant had the family name Arambašić.
Prevalence
About 800 people with faimily name Arambašić live in Croatia today, in 330 households. There were 540 of them in the middle of the past century, and their number increased by 50 percent. They are located in almost all Croatian counties, in 42 cities and 81 other places, mostly in Zagreb (120), Osijek (115), Split (50), Cepin in Osijek area (45), and in Sesvete (35).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over twenty times, the first time 1710 in source Catholic Church Parish Records.