In Croatia, Ušćebrka families are predominantly Serbs, rarely Croats (from Vinkovci area ). In the past century, relatively most of Croatian residents bearing this family name were born in Pozega and in Pleternica area.
Prevalence
About 20 people with faimily name Ušćebrka live in Croatia today, in 11 households. There were 30 of them in the middle of the past century, and their number decreased by 20 percent. They are only located in in 6 Croatian cities and four other places, mostly in Bijelo Brdo in Vinkovci area (<10), Pozega (<5), Veliki Bilac in Pleternica area (<5), Slavonski Brod (<5), and in Bjelovar (<5).
Outside Croatia
Family name Ušćebrka is present in this form only in Croatia.