In Croatia, Janušek families are Croats (from Koprivnica area ). In the past century, relatively most of Croatian residents bearing this family name were born in Koprivnica area. In Mala Mučna in Koprivnica area every ninth inhabitant had the family name Janušek.
Prevalence
Only a few people with faimily name Janušek live in Croatia today, in three households only. There were 20 of them in the middle of the past century, and their number halved. They are located in only one small Croatian place, in Mala Mucna in Koprivnica area (<10).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.