In Croatia, Dudan families are predominantly Croats (from Kastel Sucurac ), rarely Serbs. In the past century, relatively most of Croatian residents bearing this family name were born in Split and Kastel Sucurac.
Prevalence
About 10 people with faimily name Dudan live in Croatia today, in three households only. There were 0 of them in the middle of the past century, and their number multiplied. They are located in only one small Croatian place, in Kastel Kambelovac (<10).