Radun families are usually Croats and they are mostly from Kastel Sucurac , rarely Serbs. In the past century, relatively most of Croatian residents bearing this family name were born in Split and Rijeka.
Prevalence
About 80 people with faimily name Radun live in Croatia today, in 30 households. There were 80 of them in the middle of the past century, and their number remains constant. They are located in four Croatian counties, in 9 cities and 5 other places, mostly in Split (25), Slatine (15), Kastel Stari (10), Trogir (<10), and in Solin (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 2007 in source Encyclopaedia of Croatian Surnames.