In Croatia, Knižek families are predominantly Croats (from Dugo Selo ), rarely Czechs (from Novska area ). In the past century, relatively most of Croatian residents bearing this family name were born in Kutina and in Novska area.
Prevalence
Only a few people with faimily name Knižek live in Croatia today, in two households only. They are located in only two Croatian places: in Dugo Selo (<5) and Krivaj in Novska area (<5).