In Croatia, Radončić families are Bosniaks (from Plav, Montenegro ). In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and in Plav, Montenegro.
Prevalence
Only a few people with faimily name Radončić live in Croatia today, in four households only. There were 0 of them in the middle of the past century, and their number multiplied. They are located in two Croatian cities only, in Zagreb (<10) and Otocac (<5).
Outside Croatia
Family name Radončić is present in 15 countries on three continents. The family name "Radoncic " is used by some 700 people in the United States , about 100 in Sweden , and small number of people in Germany.
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1936 in source Emigration Commission Zagreb.