In Croatia, Tršek families are generally Croats (from Daruvar area ), very rarely Hungarians (also from Daruvar area ), and . In the past century, relatively most of Croatian residents bearing this family name were born in Daruvar area and in Virovitica.
Prevalence
About 20 people with faimily name Tršek live in Croatia today, in 7 households. There were 10 of them in the middle of the past century, and their number doubled. They are located in only four naselja i to in Korenicani in Daruvar area (<10), Virovitica (<10), Zagreb (<10), and in Dapcevacki Brdjani (<5).
