In Croatia, Grbašić families are Croats (from Garesnica area ). In the past century, relatively most of Croatian residents bearing this family name were born in Bjelovar and Karlovac.
Prevalence
About 10 people with faimily name Grbašić live in Croatia today, in 6 households. There were 20 of them in the middle of the past century, and their number halved. They are located in two Croatian counties, threee cities and threee other places, mostly in Zagreb (<10), Gornje Plavnice (<5), Hercegovac in Garesnica area (<5), Bjelovar (<5), and in Grubisno Polje (<5).
Outside Croatia
Family name Grbašić (including: Grbasic , Gerbasich ) is present in three countries on two continents. "Gerbasich " 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 1925 in source Emigration Commission Zagreb.