Rilović families are Croats and they are mostly from Dubrovnik. In the past century, relatively most of Croatian residents bearing this family name were born in Dubrovnik and Zagreb.
Prevalence
About 90 people with faimily name Rilović live in Croatia today, in 40 households. There were 70 of them in the middle of the past century, and their number increased by 20 percent. They are located in four Croatian counties and 8 other places, mostly in Zagreb (25), Dubrovnik (25), and in Radovcici (25), Gruda (10) and Cavtat (<5) in Dubrovnik area.
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.