In Croatia, Karnjus families are generally Croats (from Pula ), rarely Italians (from Pula area ). In the past century, relatively most of Croatian residents bearing this family name were born in Pula and in Porec area. In Rafaeli in Porec area every seventh inhabitant had the family name Karnjus.
Prevalence
Only a few people with faimily name Karnjus live in Croatia today, in three households only. They are located in two Croatian cities only, in Pula (<10) and Vodnjan in Pula area (<5).
Outside Croatia
Family name Karnjus is present in five countries on three continents. "Karnius " is used by few people in the United States.