Zetić families are often Croats and they are mostly from Bosnian Posavina , less frequently Serbs. In the past century, relatively most of Croatian residents bearing this family name were born in Bosanian Posavina (Gradacac area) and in Zagreb.
Prevalence
About 90 people with faimily name Zetić live in Croatia today, in 30 households. There were 40 of them in the middle of the past century, and their number doubled. They are located in 6 Croatian counties, in 8 cities and 7 other places, mostly in Zagreb (35), Lazina Cicka (<10), Vrbovljani in Nova Gradiska area (<10), Slavonski Brod (<10), and in Velika Gorica (<10).