In Croatia, Zinaić families are mainly Serbs, equally Croats (from Bosnian Krajina ). In the past century, relatively most of Croatian residents bearing this family name were born in Slunj area and in Karlovac. In Stara Kršlja in Slunj area every third inhabitant had the family name Zinaić.
Prevalence
About 20 people with faimily name Zinaić live in Croatia today, in 11 households. There were 70 of them in the middle of the past century, and their number decreased significantly. They are located in four Croatian counties, four cities and 6 other places, mostly in Rijeka (<10), Njivice on the Island of Krk (<5), Valbandon (<5), Grabarska in Slunj area (<5), and in Jurdani in Opatija area (<5).
Outside Croatia
Family name Zinaić (including: Zinaic , Zinaich ) is present in 6 countries on three continents. "Zinaich " is used by some 50 people in the United States.
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1926 in source Emigration Commission Zagreb.