In Croatia, Rupcich families are Croats by relative majority, equally Serbs.
Prevalence
Only a few people with faimily name Rupcich live in Croatia today, in two households only. They are located in only two naselja i to in Zagreb (<5) and Sesvete (<5).
Outside Croatia
Family name Rupcich is present in 6 countries on three continents. The family name "Rupcich " is used by some 100 people in the United States , about 50 in Chile , and small number of people in Venezuela.
In the sources analysed in the project Acta Croatica so far, the name is mentioned over twenty times, the first time 1902 in source Hartmann's General List of Apartments in Zagreb.