Tarbuk families are often Serbs and they are mostly from Hrvatska Kostajnica area , less frequently Croats. In the past century, relatively most of Croatian residents bearing this family name were born in Pakrac and in Hrvatska Kostajnica area. In Popovci in Pakrac every third inhabitant had the family name Tarbuk.
Prevalence
About 200 people with faimily name Tarbuk live in Croatia today, in 110 households. There were 500 of them in the middle of the past century, and their number decreased significantly. They are located in the most of Croatian counties, in 27 cities and 26 other places, mostly in Zagreb (45), Karlovac (20), Babina Rijeka in Hrvatska Kostajnica area (15), Petrinja (10), and in Medak (<10).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1930 in source Emigration Commission Zagreb.