In Croatia, Posnjak families are Croats (from Lepoglava ). In the past century, relatively most of Croatian residents bearing this family name were born in Lepoglava and Varazdin. In Kameničko Podgorje in Lepoglava every fiftieth inhabitant had the family name Posnjak.
Prevalence
About 30 people with faimily name Posnjak live in Croatia today, in 13 households. There were 30 of them in the middle of the past century, and their number remains constant. They are located in 6 Croatian counties, in 6 cities and four other places, mostly in Kamenicko Podgorje (10), Varazdin (<10), Koprivnica (<5), Lepoglava (<5), and in Zagreb (<5).