Okun families are Croats and they are mostly from Zlatar area. In the past century, relatively most of Croatian residents bearing this family name were born in Zlatar area and in Varazdin.
Prevalence
About 80 people with faimily name Okun live in Croatia today, in 40 households. There were 70 of them in the middle of the past century, and their number increased by 10 percent. They are located in 8 Croatian counties, in 9 cities and 14 other places, mostly in Zagreb (20), Varazdin (<10), Cakovec (<10), Hrastovljan in Ludbreg area (<10), and in Krapinica in Zlatar area (<10).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 2007 in source Encyclopaedia of Croatian Surnames.