Drobac families are mainly Croats and they are mostly from Dubrovnik area , often Serbs. In the past century, relatively most of Croatian residents bearing this family name were born in Dubrovnik and in Knin area. In Brotnja in Knin area every fifth inhabitant had the family name Drobac.
Prevalence
About 330 people with faimily name Drobac live in Croatia today, in 150 households. There were 450 of them in the middle of the past century, and their number decreased by 30 percent. They are located in almost all Croatian counties, in 30 cities and 30 other places, mostly in Zagreb (75), Komaji in Dubrovnik area (55), Gracac in Knin area (20), Vukovar (20), and in Split (15).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over twenty times, the first time 1683 in source Catholic Church Parish Records.