Giljanović families are Croats and they are mostly from Trogir area. In the past century, relatively most of Croatian residents bearing this family name were born in Split and in Trogir area. In Labin in Trogir area every seventh inhabitant had the family name Giljanović.
Prevalence
About 230 people with faimily name Giljanović live in Croatia today, in 90 households. There were 210 of them in the middle of the past century, and their number increased by 10 percent. They are located in 10 Croatian counties, in 15 cities and 9 other places, mostly in Split (155), Kastel Stari (20), Solin (15), Velika Gorica (10), and in Labin in Trogir area (<10).
Outside Croatia
Family name Giljanović is present in 6 countries on two continents.
In the sources analysed in the project Acta Croatica so far, the name is mentioned over five times, the first time 2007 in source Encyclopaedia of Croatian Surnames.