In Croatia, Blazek families are predominantly Croats (from Biograd na moru ), rarely Bosniaks (from Zagreb ). In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and in Backa, Vojvodina.
Prevalence
Only a few people with faimily name Blazek live in Croatia today, in three households only. There were 0 of them in the middle of the past century, and their number remains constant. They are located in two Croatian cities only, in Zagreb (<5) and Biograd na moru (<5).
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.