In Croatia, Janščak families are Croats (from Ludbreg ). In the past century, relatively most of Croatian residents bearing this family name were born in Ludbreg area and in Koprivnica.
Prevalence
About 10 people with faimily name Janščak live in Croatia today, in four households only. There were 20 of them in the middle of the past century, and their number halved. They are located in five Croatian cities only: in Klostar Vojakovacki (<5), Zagreb (<5), Pula (<5), Ludbreg (<5), and in Slana (<5).