Supina families are Croats and they are mostly from Lepoglava area. In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and in Lepoglava area.
Prevalence
About 120 people with faimily name Supina live in Croatia today, in 50 households. There were 70 of them in the middle of the past century, and their number increased by 70 percent. They are located in 6 Croatian counties, in 9 cities and 9 other places, mostly in Zagreb (65), Bedekovcina in Lepoglava area (20), Dugo Selo (10), Kebel in Lepoglava area (<10), and in Zapresic (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 2007 in source Encyclopaedia of Croatian Surnames.