In Croatia, Dukan families are Croats (from Trogir area ). In the past century, relatively most of Croatian residents bearing this family name were born in Split and in Trogir area.
Prevalence
About 50 people with faimily name Dukan live in Croatia today, in 20 households. There were 30 of them in the middle of the past century, and their number increased by 40 percent. They are located in four Croatian counties and threee other places, mostly in Split (25), Trogir (15), Bristivica in Trogir area (<10), Novska (<10), and in Zagreb (<5).
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.