Grdošić families are Croats and they are mostly from Ozalj area. In the past century, relatively most of Croatian residents bearing this family name were born in Ozalj area and in Zagreb. In Javor in Ozalj area every second inhabitant had the family name Grdošić.
Prevalence
About 80 people with faimily name Grdošić live in Croatia today, in 40 households. There were 50 of them in the middle of the past century, and their number increased by 80 percent. They are located in 6 Croatian counties, in 7 cities and 7 other places, mostly in Zagreb (20), Karlovac (20), Hartje in Ozalj area (10), Jastrebarsko (<10), and in Javor in Ozalj area (<10).
Outside Croatia
Family name Grdošić is present in five countries on three continents. The family name "Grdosic " is used by small number of people in Australia and small number 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.