In Croatia, Košnjar families are mainly Czechs (from Daruvar ), rarely Croats (also from Daruvar ), and . In the past century, relatively most of Croatian residents bearing this family name were born in Daruvar and Pakrac.
Prevalence
About 20 people with faimily name Košnjar live in Croatia today, in 11 households. There were 20 of them in the middle of the past century, and their number remains constant. They are located in only four naselja i to in Daruvar (10), Doljani (<5), Zagreb (<5), and in Krasica (<5).
Outside Croatia
Family name Košnjar is present in this form only in Croatia.