Čalušić families are Croats and they are mostly from Bosnian Posavina. According to some sources they are from Imotske Krajine. In the past century, relatively most of Croatian residents bearing this family name were born in Doboj, Bosnia (Doboj area) and in Bosanian Posavina (Odzak area).
Prevalence
About 290 people with faimily name Čalušić live in Croatia today, in 110 households. There were 20 of them in the middle of the past century, and their number multiplied. They are located in the most of Croatian counties, in 21 cities and 30 other places, mostly in Slavonski Brod (60), Zagreb (45), Gornja Vrba in Slavonski Brod area (20), Cerna in Zupanja area (20), and in Donja Vrba in Slavonski Brod area (15).
Outside Croatia
Family name Čalušić is present in 10 countries on four continents. The family name "Calusic " is used by small number of people in Canada , small number in the United States , and small number of people in Germany.
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.