In Croatia, Šimičak families are Croats (from Karlovac ). In the past century, relatively most of Croatian residents bearing this family name were born in Bjelovar and Jastrebarsko.
Prevalence
About 10 people with faimily name Šimičak live in Croatia today, in four households only. There were 20 of them in the middle of the past century, and their number halved. They are located in only threee naselja i to in Karlovac (<10), Draganic in Karlovac area (<5), and in Bosevci (<5).