Šiljić families are predominantly Croats and they are mostly from Bosnian Posavina , rarely Bosniaks and Serbs. In the past century, relatively most of Croatian residents bearing this family name were born in Bosanian Posavina (Bosanska Gradiska area) and in Split. In Nuglašica in Western Bosnia every third inhabitant had the family name Šiljić.
Prevalence
About 110 people with faimily name Šiljić live in Croatia today, in 40 households. There were 60 of them in the middle of the past century, and their number increased by 70 percent. They are located in the most of Croatian counties, in 17 cities and 5 other places, mostly in Split (45), Vis on the Island of Vis (15), Zagreb (10), Vojnic Sinjski in Sinj area (<10), and in Dubrovnik (<10).
Outside Croatia
Family name Šiljić is present in two countries on two continents. The family name "Siljic " is used by small number of people in the United States.
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.
