In Croatia, Jefić families are Croats (from Kastav ). In the past century, relatively most of Croatian residents bearing this family name were born in Middle Bosnia (Zenica area) and in Dubrovnik.
Prevalence
About 10 people with faimily name Jefić live in Croatia today, in three households only. They are located in only four naselja i to in Spincici (<10), Rijeka (<5), Kastav (<5), and in Mimice (<5).
Outside Croatia
Family name Jefić is present in 8 countries on three continents. The family name "Jefic " is used by small number of people in Canada , small number in Australia , and small number of people in the United States.