In Croatia, Ivok families are Croats (from Jastrebarsko ). In the past century, relatively most of Croatian residents bearing this family name were born in Jastrebarsko and Karlovac.
Prevalence
About 40 people with faimily name Ivok live in Croatia today, in 14 households. There were 50 of them in the middle of the past century, and their number decreased by 30 percent. They are located in four Croatian counties, four cities and 6 other places, mostly in Ceglje (10), Karlovac (<10), Gornja Kupcina (<10), Sesvete (<5), and in Bratina in Jastrebarsko area (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1902 in source Hartmann's General List of Apartments in Zagreb.