In Croatia, Osonjački families are Croats (from Beli Manastir area ). In the past century, relatively most of Croatian residents bearing this family name were born in Beli Manastir area and in Lepoglava area.
Prevalence
About 50 people with faimily name Osonjački live in Croatia today, in 20 households. There were 20 of them in the middle of the past century, and their number more than doubled. They are located in four Croatian counties, in 6 cities and four other places, mostly in Varazdin (15), Popovac in Beli Manastir area (<10), Samobor (<10), Lepoglava (<10), and in Breznica Nasicka in Nasice area (<5).
Outside Croatia
Family name Osonjački is present in this form only in Croatia.