Breznik families are Croats and they are mostly from Mursko Sredisce area. In the past century, relatively most of Croatian residents bearing this family name were born in Mursko Sredisce area and in Cakovec.
Prevalence
About 80 people with faimily name Breznik live in Croatia today, in 30 households. There were 70 of them in the middle of the past century, and their number increased by 10 percent. They are located in 6 Croatian counties, in 9 cities and threee other places, mostly in Zagreb (30), Slavonski Brod (10), Koprivnica (<10), Zabnik in Mursko Sredisce area (<10), and in Cakovec (<10).
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.