In Croatia, Dudjak families are predominantly Croats (from Nasice ), rarely Slovaks (also from Nasice ), and barely Serbs. In the past century, relatively most of Croatian residents bearing this family name were born in Nasice and Osijek.
Prevalence
About 50 people with faimily name Dudjak live in Croatia today, in 18 households. There were 20 of them in the middle of the past century, and their number more than doubled. They are located in four Croatian counties, in 6 cities and threee other places, mostly in Nasice (20), Visnjevac (<10), Djurdjenovac in Nasice area (<10), Markovac Nasicki (<5), and in Rijeka (<5).