In Croatia, Slobodnjak families are generally Croats (from Ozalj area ), barely Montenegrins (from Bjelovar area ), and . In the past century, relatively most of Croatian residents bearing this family name were born in Bjelovar and Nova Gradiska. In Žamarija in Ozalj area every ninth inhabitant had the family name Slobodnjak.
Prevalence
About 50 people with faimily name Slobodnjak live in Croatia today, in 17 households. There were 60 of them in the middle of the past century, and their number decreased by 20 percent. They are located in 9 Croatian counties, in 8 cities and 9 other places, mostly in Bjelovar (10), Zagreb (<10), Grabrovnica in Djurdjevac area (<10), Sandrovac in Bjelovar area (<10), and in Nova Gradiska (<5).