In Croatia, Šumaruna families are generally Serbs, rarely Croats (from Rijeka ). In the past century, relatively most of Croatian residents bearing this family name were born in Vinkovci and on the Island of Krk.
Prevalence
About 20 people with faimily name Šumaruna live in Croatia today, in 9 households. There were 10 of them in the middle of the past century, and their number doubled. They are located in four Croatian counties, two cities and four other places, mostly in Stari Jankovci in Vinkovci area (<10), Vrbnik in Knin area (<5), Zagreb (<5), Rijeka (<5), and in Sesvete (<5).
Outside Croatia
Family name Šumaruna is present in this form only in Croatia.