In Croatia, Arbaš families are Croats (from Karlovac area ). In the past century, relatively most of Croatian residents bearing this family name were born in Obrovac area and in Samobor.
Prevalence
About 10 people with faimily name Arbaš live in Croatia today, in 6 households. There were 10 of them in the middle of the past century, and their number remains constant. They are only located in in one Croatian city and 5 other places, mostly in Marinici in Rijeka area (<10), Draganic in Karlovac area (<10), Viskovo in Rijeka area (<5), Rakov Potok (<5), and in Zdrelac on the Island of Pasman (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 2007 in source Encyclopaedia of Croatian Surnames.