In Croatia, Dukai families are predominantly Croats (from Peljesac Peninsula ), rarely Hungarians (from Backa, Vojvodina ). In the past century, relatively most of Croatian residents bearing this family name were born in Backa, Vojvodina and in Dubrovnik.
Prevalence
Only a few people with faimily name Dukai live in Croatia today, in five households only. They are located in only one small Croatian place, in Orebic on the Peljesac peninsula (<10).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over five times, the first time 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.