In Croatia, Češek families are Croats (from Slatina ). In the past century, relatively most of Croatian residents bearing this family name were born in Virovitica and Slatina.
Prevalence
About 10 people with faimily name Češek live in Croatia today, in three households only. There were 20 of them in the middle of the past century, and their number halved. They are located in two Croatian cities only, in Slatina (<10) and Virovitica (<5).