In Croatia, Rupnik families are generally Croats (from Osijek ), very rarely Slovenes (from Srijem, Vojvodina ), and . In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and Osijek.
Prevalence
About 80 people with faimily name Rupnik live in Croatia today, in 40 households. There were 80 of them in the middle of the past century, and their number remains constant. They are located in the most of Croatian counties, in 15 cities and 8 other places, mostly in Zagreb (20), Osijek (20), Rijeka (15), Split (<10), and in Sibenik (<5).
Outside Croatia
Family name Rupnik is present in 22 countries worldwide. The family name "Rupnik " is used by some 400 people in the United States , about 100 in Italy , and some 100 people in Argentina. "Rupnick " is used by some 200 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 1923 in source Emigration Commission Zagreb.