In Croatia, Zjača families are mainly Croats (from Zadar ), equally Serbs. In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and Nin. In Donji Babin Potok in Otocac area every twentieth inhabitant had the family name Zjača.
Prevalence
About 30 people with faimily name Zjača live in Croatia today, in 20 households. There were 90 of them in the middle of the past century, and their number decreased significantly. They are only located in four Croatian cities and 5 other places, mostly in Rijeka (<10), Zagreb (<5), Karlovac (<5), Zadar (<5), and in Donji Babin Potok in Otocac area (<5).