In Croatia, Grnović families are mainly Serbs, less frequently Croats (from Koprivnica area ). In the past century, relatively most of Croatian residents bearing this family name were born in Hrvatska Kostajnica area and in Hrvatska Kostajnica.
Prevalence
About 20 people with faimily name Grnović live in Croatia today, in 14 households. There were 50 of them in the middle of the past century, and their number decreased significantly. They are located and 6 other Croatian places, mostly in Velika Mucna in Koprivnica area (<5), Zagreb (<5), Pula (<5), Sisak (<5), and in Sveti Ivan Zelina (<5).
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.