Križnjak families are Croats and they are mostly from Ivanec area. In the past century, relatively most of Croatian residents bearing this family name were born in Ivanec area and in Koprivnica.
Prevalence
About 150 people with faimily name Križnjak live in Croatia today, in 70 households. There were 200 of them in the middle of the past century, and their number decreased by 20 percent. They are located in 10 Croatian counties, in 11 cities and 30 other places, mostly in Koprivnica (30), Zagreb (20), Varazdin (10), Petrijanec in Varazdin area (<10), and in Vrhovac Sokolovacki in Koprivnica area (<10).
Outside Croatia
Family name Križnjak is present in this form only in Croatia.
In the sources analysed in the project Acta Croatica so far, the name is mentioned over five times, the first time 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.