In Croatia, Udarović families are generally Croats (from Otocac ), very rarely Roms (from Delnice ). In the past century, relatively most of Croatian residents bearing this family name were born in Otocac and Vinkovci.
Prevalence
About 10 people with faimily name Udarović live in Croatia today, in five households only. There were 10 of them in the middle of the past century, and their number remains constant. They are located in four Croatian counties, threee cities and threee other places, mostly in Vinkovci (<5), Mirkovci (<5), Otocac (<5), Covici (<5), and in Gredjani in Glina area (<5).
Outside Croatia
Family name Udarović (including: Udarovic , Udarovich ) is present in three countries.
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1935 in source Emigration Commission Zagreb.