In Croatia, Grubać families are Croats (from Split ). In the past century, relatively most of Croatian residents bearing this family name were born in Split and Delnice. In Lučice in Delnice every fiftieth inhabitant had the family name Grubać.
Prevalence
Only a few people with faimily name Grubać live in Croatia today, in four households only. They are located in only four Croatian places: in Kastel Sucurac (<10), Solin (<5), Voloder in Kutina area (<5), and in Zvonimirovo in Virovitica area (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over ten times, the first time 1917 in source List of Dignitaries, Officials and Public Servants of the Kingdom of Croatia-Slavonia.