In Croatia, Stelmah families are Croats (from Djurdjevac area ). In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb.
Prevalence
About 10 people with faimily name Stelmah live in Croatia today, in four households only. There were 10 of them in the middle of the past century, and their number remains constant. They are located in threee Croatian counties, two cities and another small place , mostly in Zagreb (<10), Zapresic (<5), and in Kalinovac in Djurdjevac area (<5).