In Croatia, Šuštović families are Croats (from Pazin area ). In the past century, relatively most of Croatian residents bearing this family name were born in Pazin area.
Prevalence
Only a few people with faimily name Šuštović live in Croatia today, in two households only. They are located in only two Croatian places: in Cerovlje (<5) and Novaki Pazinski (<5) in Pazin area.
Outside Croatia
Family name Šuštović (including: Sustovic , Shustovich and Sustovich ) is present in 7 countries on two continents.