In Croatia, Karna families are mainly Serbs, less frequently Croats (from Knin area ). In the past century, relatively most of Croatian residents bearing this family name were born in Knin area and in Knin.
Prevalence
About 50 people with faimily name Karna live in Croatia today, in 30 households. There were 80 of them in the middle of the past century, and their number decreased by 40 percent. They are located in 6 Croatian counties, in 9 cities and 8 other places, mostly in Zagreb (15), Split (<10), Biskupija in Knin area (<10), Pula (<5), and in Mravince (<5).