In Croatia, Gavlek families are Croats (from Djakovo area ).
Prevalence
Only a few people with faimily name Gavlek live in Croatia today, in one household only. There were 30 of them in the middle of the past century, and their number decreased significantly. They are located in only one small Croatian place, in Dragotin in Djakovo area (<5).
Outside Croatia
Family name Gavlek is present in four countries on three continents. The family name "Gavlek " is used by small number of people in the United States.
In the sources analysed in the project Acta Croatica so far, the name is mentioned over ten times, the first time 1938 in source Phone Book - Zagreb 1938.