Alduk families are Croats and they are mostly from Drnis. In the past century, relatively most of Croatian residents bearing this family name were born in Drnis and Split. In Donje Planjane in Drnis area every seventh inhabitant had the family name Alduk.
Prevalence
About 260 people with faimily name Alduk live in Croatia today, in 100 households. There were 140 of them in the middle of the past century, and their number increased by 90 percent. They are located in 9 Croatian counties, in 16 cities and 15 other places, mostly in Split (65), Privlaka (40), Djakovo (25), Drnis (25), and in Vinkovci (15).
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.