In Croatia, Zinaja families are mainly Serbs, less frequently Croats (from Karlovac ). In the past century, relatively most of Croatian residents bearing this family name were born in Karlovac and Glina.
Prevalence
About 30 people with faimily name Zinaja live in Croatia today, in 15 households. There were 60 of them in the middle of the past century, and their number halved. They are located in threee Croatian counties, four cities and 5 other places, mostly in Gornja Trebinja (<10), Zagreb (<10), Karlovac (<10), Pjescanica in Glina area (<10), and in Ravno Rasce (<5).
Outside Croatia
Family name Zinaja is present in three countries on two continents. The family name "Zinaja " is used by small number of people in the United States.