In Croatia, Grlj families are predominantly Croats (from the Island of Krk ), rarely Slovenes (from Opatija area ), and . In the past century, relatively most of Croatian residents bearing this family name were born in Slovenia and on the Island of Krk.
Prevalence
About 20 people with faimily name Grlj live in Croatia today, in 8 households. There were 20 of them in the middle of the past century, and their number remains constant. They are located in two Croatian counties, threee cities and four other places, mostly in Rijeka (<10), and in Krk (<10) and Baska (<5) on the Island of Krk, and in Matulji (<5) and Mucici (<5) in Opatija area.
