Šuštić families are Croats and they are mostly from Zlatar area. In the past century, relatively most of Croatian residents bearing this family name were born in Zlatar area and in Zagreb.
Prevalence
About 140 people with faimily name Šuštić live in Croatia today, in 50 households. There were 120 of them in the middle of the past century, and their number increased by 20 percent. They are located in 9 Croatian counties, in 13 cities and 11 other places, mostly in Podgorje Bistricko in Zlatar area (35), Zagreb (20), Sesvete (15), Split (10), and in Sisak (10).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over twenty times, the first time 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.