In Croatia, Nadjen families are Croats (from Vrbovec area ). In the past century, relatively most of Croatian residents bearing this family name were born in Vrbovec area.
Prevalence
Only a few people with faimily name Nadjen live in Croatia today, in one household only. There were 0 of them in the middle of the past century, and their number remains constant. They are located in one Croatian city only, in Vrbovec (<5).
Outside Croatia
Family name Nadjen is present in 7 countries on four continents. "Nadien " is used by some 300 people in Indonesia and small number in the United States.