In Croatia, Dvorak families are predominantly Croats (from the Island of Krk ), rarely Czechs (from Daruvar area ). In the past century, relatively most of Croatian residents bearing this family name were born in Daruvar area and in Grubisno Polje.
Prevalence
About 20 people with faimily name Dvorak live in Croatia today, in 14 households. There were 60 of them in the middle of the past century, and their number decreased significantly. They are located and 6 other Croatian places, mostly in Zagreb (<10), Daruvar (<5), Rijeka (<5), Donji Sredjani in Daruvar area (<5), and in Njivice on the Island of Krk (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1917 in source List of Dignitaries, Officials and Public Servants of the Kingdom of Croatia-Slavonia.