In Croatia, Grdaš families are Croats (from the Island of Pasman ). In the past century, relatively most of Croatian residents bearing this family name were born on the Island of Pasman and in Zadar.
Prevalence
About 20 people with faimily name Grdaš live in Croatia today, in 9 households. There were 60 of them in the middle of the past century, and their number decreased significantly. They are located in only threee Croatian places: in Tkon on the Island of Pasman (20), Rijeka (<5), and in Nevidjane on the Island of Pasman (<5).