In Croatia, Rupar families are predominantly Croats (from Zapresic area ), rarely Serbs, and very rarely Hungarians (from Beli Manastir ). In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and Osijek.
Prevalence
About 40 people with faimily name Rupar live in Croatia today, in 19 households. There were 40 of them in the middle of the past century, and their number remains constant. They are located in 8 Croatian counties, in 8 cities and 8 other places, mostly in Senkovec in Zapresic area (<10), Zapresic (<10), Cavtat in Dubrovnik area (<5), Zapolje Brodsko (<5), and in Osijek (<5).
Outside Croatia
Family name Rupar is present in 25 countries worldwide. The family name "Rupar " is used by some 400 people in the United States , about 200 in Poland , and some 200 people in Germany. "Ruppar " is used by some 50 people in the United States.
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1926 in source Emigration Commission Zagreb.