In Croatia, Južnić families are almost entirely Croats (from Delnice ), very rarely Slovenes (from Slovenia ). In the past century, relatively most of Croatian residents bearing this family name were born in Rijeka and in Slovenia.
Prevalence
About 20 people with faimily name Južnić live in Croatia today, in 8 households. There were 10 of them in the middle of the past century, and their number doubled. They are located in four Croatian counties, in 6 cities and another small place , mostly in Delnice (<10), Zagreb (<10), Rijeka (<5), Guce Selo (<5), and in Cikovici (<5).
Outside Croatia
Family name Južnić is present in this form only in Croatia.