In Croatia, Ulijan families are generally Croats (from Ilok ), rarely Serbs. In the past century, relatively most of Croatian residents bearing this family name were born in Ilok and Vukovar.
Prevalence
About 10 people with faimily name Ulijan live in Croatia today, in five households only. There were 20 of them in the middle of the past century, and their number halved. They are located in four Croatian counties, four cities and two other places, mostly in Ilok (<5), Mohovo (<5), Senj (<5), Djakovo (<5), and in Senj (<5).