In Croatia, Brezinšak families are Croats (from Klanjec area ). In the past century, relatively most of Croatian residents bearing this family name were born in Osijek and in Klanjec area.
Prevalence
Only a few people with faimily name Brezinšak live in Croatia today, in three households only. They are located in only threee Croatian places: in Josipovac (<5), Ivanovac in Osijek area (<5), and in Osijek (<5).
Outside Croatia
Family name Brezinšak is present in this form only in Croatia.