Sušilović families are Croats and they are mostly from western Bosnia. In the past century, relatively most of Croatian residents bearing this family name were born in Western Bosnia (Tomislavgrad area) and in Banja Luka Region, Bosnia (Banja Luka area).
Prevalence
About 240 people with faimily name Sušilović 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 26 cities and 23 other places, mostly in Zagreb (70), Bjelovar (20), Koprivnica (20), Garesnica (20), and in Sinj (10).
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.