In Croatia, Trobonjača families are predominantly Serbs, rarely Croats (from Solin area ), and very rarely Germans. In the past century, relatively most of Croatian residents bearing this family name were born in Skradin and Sibenik.
Prevalence
About 30 people with faimily name Trobonjača live in Croatia today, in 18 households. They are located and threee other Croatian places, mostly in Sibenik (10), Solin (<10), Matulji in Opatija area (<10), Bratiskovci (<5), and in Zagreb (<5).
Outside Croatia
Family name Trobonjača is present in four countries on two continents.