In Croatia, Rodjak families are predominantly Croats (from Djurdjevac area ), rarely Montenegrins (from Zagreb ). In the past century, relatively most of Croatian residents bearing this family name were born in Virovitica and Zagreb.
Prevalence
Only a few people with faimily name Rodjak live in Croatia today, in five households only. There were 20 of them in the middle of the past century, and their number halved. They are located in threee Croatian counties, two cities and two other places, mostly in Zagreb (<5), Podravske Sesvete in Djurdjevac area (<5), Virovitica (<5), and in Klostar Podravski in Djurdjevac area (<5).
Outside Croatia
Family name Rodjak (including: Rodiack , Rodiak ) is present in 9 countries on four continents. "Rodiack " is used by small number of 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 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.