Mušić families are mainly Croats and they are mostly from the Island of Korcula , often Bosniaks (from Cazinska Krajina Region, Bosnia). In the past century, relatively most of Croatian residents bearing this family name were born on the Island of Korcula and in Zagreb. In Bosanci in Vrbovsko area every third inhabitant had the family name Mušić.
Prevalence
About 300 people with faimily name Mušić live in Croatia today, in 130 households. There were 260 of them in the middle of the past century, and their number increased by 20 percent. They are located in almost all Croatian counties, in 33 cities and 40 other places, mostly in Lumbarda on the Island of Korcula (80), Zagreb (50), Zadar (25), Rijeka (20), and in Pula (15).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over fifty times, the first time 1571 in source Catholic Church Parish Records.