In Croatia, Glavaz families are Croats (from Umag ). In the past century, relatively most of Croatian residents bearing this family name were born in Rijeka and in Labin area.
Prevalence
Only a few people with faimily name Glavaz 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 two Croatian cities only, in Rijeka (<5) and Umag (<5).
Outside Croatia
Family name Glavaz is present in four countries on two continents. The family name "Glavaz " is used by small number of people in the United States , small number in Canada , and small number of people in Italy.
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1902 in source Hartmann's General List of Apartments in Zagreb.