Gusić families are Croats and they are mostly from Sinj area. According to some sources they are from Herzegovina. In the past century, relatively most of Croatian residents bearing this family name were born in Sinj area and in Sinj. In places Grab and Krivodol in Sinj area every fourth inhabitant had the family name Gusić.
Prevalence
About 560 people with faimily name Gusić live in Croatia today, in 200 households. There were 160 of them in the middle of the past century, and their number more than tripled. They are located in almost all Croatian counties, in 25 cities and 35 other places, mostly in Grab in Sinj area (140), Zagreb (70), Sinj (45), Velika Gorica (40), and in Split (30).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over thirty times, the first time 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.