In Croatia, Kalužnik families are Croats (from Orahovica area ). In the past century, relatively most of Croatian residents bearing this family name were born in Orahovica area and in Serbia. In Duga Međa in Orahovica area every tenth inhabitant had the family name Kalužnik.
Prevalence
About 10 people with faimily name Kalužnik live in Croatia today, in two households only. There were 0 of them in the middle of the past century, and their number multiplied. They are located in only threee naselja i to in Pozega (<5), and in Zdenci (<5) and Duga Medja (<5) in Orahovica area.