In Croatia, Stuparich families are predominantly Croats (from Rovinj ), rarely Italians (from Pula ). In the past century, relatively most of Croatian residents bearing this family name were born in Rijeka and Pula.
Prevalence
About 10 people with faimily name Stuparich live in Croatia today, in three households only. There were 30 of them in the middle of the past century, and their number decreased significantly. They are located in three Croatian cities only: in Rijeka (<10), Rovinj (<5), and in Veli Losinj on the Island of Losinj (<5).
Outside Croatia
At least three families with this surname emigrated from Croatia to the United States (2) and Switzerland (1). Family name Stuparich is present in 7 countries on four continents. The family name "Stuparich " is used by some 90 people in Italy , about 50 in the United States , and small number of people in Australia.
In the sources analysed in the project Acta Croatica so far, the name is mentioned over five times, the first time 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.