In Croatia, Duković families are almost entirely Croats (from Garesnica ), barely Russians (from Zagreb ). In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and in Zabok area.
Prevalence
About 60 people with faimily name Duković live in Croatia today, in 20 households. There were 90 of them in the middle of the past century, and their number decreased by 40 percent. They are located in 8 Croatian counties, in 7 cities and 8 other places, mostly in Zagreb (20), Bezavina in Zabok area (<10), Garesnicki Brestovac (<10), Garesnica (<10), and in Varazdin (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1933 in source Emigration Commission Zagreb.