In Croatia, Vlasak families are Czechs by relative majority (from Daruvar area ), equally Croats (from Virovitica area ). In the past century, relatively most of Croatian residents bearing this family name were born in Daruvar area and in Zagreb. In Otkopi in Daruvar area every twentieth inhabitant had the family name Vlasak.
Prevalence
About 10 people with faimily name Vlasak live in Croatia today, in five households only. There were 20 of them in the middle of the past century, and their number halved. They are located in only four naselja i to in Suhopolje in Virovitica area (<5), Zagreb (<5), and in Koncanica (<5) and Otkopi (<5) in Daruvar area.
