Pupačić families are Croats and they are mostly from Omis area. According to some sources they are from Kostanja. In the past century, relatively most of Croatian residents bearing this family name were born in Split and Omis.
Prevalence
About 150 people with faimily name Pupačić live in Croatia today, in 60 households. There were 90 of them in the middle of the past century, and their number increased by 60 percent. They are located in four Croatian counties, four cities and 7 other places, mostly in Split (60), Kostanje (30), Slime (20), Zagreb (10), and in Omis (10).
Outside Croatia
Family name Pupačić is present in five countries on three continents. The family name "Pupacic " is used by few people in the United States.
In the sources analysed in the project Acta Croatica so far, the name is mentioned over five times, the first time 2007 in source Encyclopaedia of Croatian Surnames.