In Croatia, Grolić families are predominantly Croats (from Kastel Sucurac ), rarely Slovenes (from the Island of Ciovo ). In the past century, relatively most of Croatian residents bearing this family name were born in Kastel Sucurac and Split.
Prevalence
About 10 people with faimily name Grolić live in Croatia today, in three households only. There were 10 of them in the middle of the past century, and their number remains constant. They are located in only threee naselja i to in Kastel Gomilica (<10), Okrug Donji on the Island of Ciovo (<5), and in Kastel Stari (<5).