Čubra families are mainly Serbs and they are mostly from Beli Manastir area , whereas often Croats. In the past century, relatively most of Croatian residents bearing this family name were born in Osijek and Slunj. In Gornji Dobretin in Hrvatska Kostajnica area every fourth inhabitant had the family name Čubra.
Prevalence
About 120 people with faimily name Čubra live in Croatia today, in 60 households. There were 200 of them in the middle of the past century, and their number decreased by 40 percent. They are located in the most of Croatian counties, in 18 cities and 19 other places, mostly in Tenja (20), Jagodnjak in Beli Manastir area (20), Zagreb (15), Osijek (<10), and in Pula (<10).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 2007 in source Encyclopaedia of Croatian Surnames.