Švorinić families are Croats and they are mostly from the Island of Ugljan. In the past century, relatively most of Croatian residents bearing this family name were born in Zadar and on the Island of Ugljan. In Sestrunj on the Island of Ugljan every third inhabitant had the family name Švorinić.
Prevalence
About 150 people with faimily name Švorinić live in Croatia today, in 80 households. There were 180 of them in the middle of the past century, and their number decreased by 20 percent. They are located and 6 other Croatian places, mostly in Zadar (75), Sestrunj on the Island of Ugljan (20), Veli Iz (15), Rijeka (15), and in Zagreb (10).
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.