In Croatia, Vrduljak families are Croats (from Koprivnica area ). In the past century, relatively most of Croatian residents bearing this family name were born in Koprivnica.
Prevalence
Only a few people with faimily name Vrduljak 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 only one small Croatian place, in Vojvodinec in Koprivnica area (<5).
Outside Croatia
Family name Vrduljak is present in this form only in Croatia.
