In Croatia, Grublješić families are mainly Croats (from Vrbovsko area ), less frequently Serbs, and barely Bosniaks (from Zagreb ). In the past century, relatively most of Croatian residents bearing this family name were born in Hrvatska Kostajnica area and in Zagreb. In Mrakodol in Bosanian Posavina every sixth inhabitant had the family name Grublješić.
Prevalence
About 60 people with faimily name Grublješić live in Croatia today, in 30 households. There were 60 of them in the middle of the past century, and their number remains constant. They are located in 9 Croatian counties, in 11 cities and 10 other places, mostly in Rijeka (15), Zagreb (<10), Sisak (<10), Sesvete (<5), and in Brinjani (<5).
Outside Croatia
Family name Grublješić is present in this form only in Croatia.