In Croatia, Brzak families are generally Croats (from Zagreb ), very rarely Czechs (from Grubisno Polje ). In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and Grubisno Polje.
Prevalence
About 50 people with faimily name Brzak live in Croatia today, in 20 households. There were 100 of them in the middle of the past century, and their number halved. They are located in 6 Croatian counties, in 6 cities and threee other places, mostly in Zagreb (35), Oresje in Samobor area (<10), Virovitica (<5), Grubisno Polje (<5), and in Markovac in Porec area (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.