Stažnik families are Croats and they are mostly from Zlatar. In the past century, relatively most of Croatian residents bearing this family name were born in Zlatar and Zagreb.
Prevalence
About 80 people with faimily name Stažnik live in Croatia today, in 30 households. There were 80 of them in the middle of the past century, and their number remains constant. They are only located in threee Croatian cities and 7 other places, mostly in Zagreb (30), Martinscina (30), Jarmina in Vinkovci area (15), Zlatar (<10), and in Zapresic (<5).
Outside Croatia
Family name Stažnik is present in three countries on two continents. The family name "Staznik " is used by small number of people in the United States.
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 2007 in source Encyclopaedia of Croatian Surnames.