In Croatia, Čavljak families are Croats (from Koprivnica ). In the past century, relatively most of Croatian residents bearing this family name were born in Koprivnica and Krizevci.
Prevalence
Only a few people with faimily name Čavljak live in Croatia today, in five households only. There were 30 of them in the middle of the past century, and their number decreased significantly. They are located in only threee Croatian places: in Koprivnica (<10), Starigrad (<5), and in Mikovec in Krizevci area (<5).
Outside Croatia
Family name Čavljak is present in this form only in Croatia.