Šupica families are mainly Serbs and they are mostly from Slunj area , whereas often Croats. In the past century, relatively most of Croatian residents bearing this family name were born in Slunj area and in Zagreb.
Prevalence
About 150 people with faimily name Šupica live in Croatia today, in 70 households. There were 210 of them in the middle of the past century, and their number decreased by 30 percent. They are located in 9 Croatian counties, in 12 cities and 9 other places, mostly in Plaski in Slunj area (30), Rijeka (25), Zagreb (25), Dragalic in Nova Gradiska area (15), and in Pothum Plascanski in Slunj area (<10).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 2007 in source Encyclopaedia of Croatian Surnames.