In Croatia, Ivak families are Croats (from Zlatar area ), barely Serbs. In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and in Zlatar area.
Prevalence
About 50 people with faimily name Ivak live in Croatia today, in 30 households. There were 110 of them in the middle of the past century, and their number halved. They are located in four Croatian counties, in 6 cities and four other places, mostly in Marija Bistrica in Zlatar area (20), Zagreb (15), Dugo Selo (<10), Ivanic-Grad (<10), and in Podgorje Bistricko in Zlatar area (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.