Šupraha families are Croats and they are mostly from the Island of Pag. In the past century, relatively most of Croatian residents bearing this family name were born on the Island of Pag and in Rijeka.
Prevalence
About 180 people with faimily name Šupraha live in Croatia today, in 80 households. There were 80 of them in the middle of the past century, and their number doubled. They are located in 6 Croatian counties, in 12 cities and four other places, mostly in Kolan on the Island of Pag (60), Rijeka (35), Mandre on the Island of Pag (20), Split (15), and in Zagreb (<10).
Outside Croatia
Family name Šupraha (including: Supraha , Superatha ) is present in three countries on two continents.
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.