Glavak families are Croats and they are mostly from Ludbreg area. In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and Bjelovar.
Prevalence
About 160 people with faimily name Glavak live in Croatia today, in 70 households. There were 200 of them in the middle of the past century, and their number decreased by 20 percent. They are located in the most of Croatian counties, in 15 cities and 20 other places, mostly in Zagreb (40), Donji Kraljevec in Prelog area (15), Koprivnica (10), Cakovec (<10), and in Galovac (<10).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over twenty times, the first time 1902 in source Hartmann's General List of Apartments in Zagreb.