In Croatia, Kiršek families are predominantly Croats (from Daruvar area ), rarely Slovaks (from Daruvar ). In the past century, relatively most of Croatian residents bearing this family name were born in Kosovo.
Prevalence
About 10 people with faimily name Kiršek live in Croatia today, in three households only. There were 0 of them in the middle of the past century, and their number multiplied. They are located in only four naselja i to in Bjelovar (<10), Daruvar (<5), Djulovac in Daruvar area (<5), and in Vrbovac (<5).
Outside Croatia
Family name Kiršek (including: Kirsek , Kirseck ) is present in four countries.