In Croatia, Sormilić families are Croats (from the Island of Krk ). In the past century, relatively most of Croatian residents bearing this family name were born on the Island of Krk and on the Island of Krk. In Žgombići on the Island of Krk every fifth inhabitant had the family name Sormilić.
Prevalence
About 10 people with faimily name Sormilić live in Croatia today, in five households only. There were 30 of them in the middle of the past century, and their number decreased significantly. They are located in only five Croatian places: in Omisalj (<5), Malinska (<5), Milovcici (<5), Zgombici (<5) and Sabljici (<5) on the Island of Krk.