In Croatia, Rupa families are Croats (from Bjelovar area ). In the past century, relatively most of Croatian residents bearing this family name were born in Slunj and Bjelovar.
Prevalence
About 60 people with faimily name Rupa live in Croatia today, in 30 households. There were 120 of them in the middle of the past century, and their number halved. They are located in 7 Croatian counties, in 7 cities and 10 other places, mostly in Veliko Trojstvo in Bjelovar area (15), Zagreb (10), Bjelovar (<10), Vodjinci in Vinkovci area (<10), and in Koprivnica (<10).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over ten times, the first time 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.