Hladnik families are often Croats and they are mostly from Slavonski Brod area. According to some sources they are from Domzale (Slovenia). In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and in Slavonski Brod area.
Prevalence
About 70 people with faimily name Hladnik live in Croatia today, in 40 households. There were 70 of them in the middle of the past century, and their number remains constant. They are located in 8 Croatian counties, in 8 cities and 5 other places, mostly in Zagreb (35), Prelog (<10), Rijeka (<10), Split (<10), and in Mugeba (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over five times, the first time 2007 in source Encyclopaedia of Croatian Surnames.