Blažek families are mainly Croats and they are mostly from Koprivnica area , barely Czechs. In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and Koprivnica.
Prevalence
About 440 people with faimily name Blažek live in Croatia today, in 180 households. There were 440 of them in the middle of the past century, and their number remains constant. They are located in the most of Croatian counties, in 23 cities and 37 other places, mostly in Zagreb (100), Koprivnica (85), Donji Desinec (60), Peteranec in Koprivnica area (60), and in Gorican in Cakovec area (25).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over twenty times, the first time 1902 in source Hartmann's General List of Apartments in Zagreb.