In Croatia, Umiljanović families are Croats (from Nasice ). In the past century, relatively most of Croatian residents bearing this family name were born in Nasice and Zagreb. In Martin in Nasice every thirtieth inhabitant had the family name Umiljanović.
Prevalence
About 40 people with faimily name Umiljanović live in Croatia today, in 17 households. There were 40 of them in the middle of the past century, and their number remains constant. They are located in four Croatian counties and threee other places, mostly in Nasice (20), Martin (10), Umag (<5), Jamarica (<5), and in Zagreb (<5).
Outside Croatia
Family name Umiljanović is present in this form only in Croatia.
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 2007 in source Encyclopaedia of Croatian Surnames.