Birkić families are Croats and they are mostly from Biograd na Moru area. In the past century, relatively most of Croatian residents bearing this family name were born in Benkovac and Zadar. In places Sikovo and Gornje Raštane in Biograd na moru area every eighth inhabitant had the family name Birkić.
Prevalence
About 510 people with faimily name Birkić live in Croatia today, in 170 households. There were 240 of them in the middle of the past century, and their number doubled. They are located in 10 Croatian counties, in 14 cities and 26 other places, mostly in Biograd na moru (130), Zadar (55), Sikovo in Biograd na moru area (50), Rijeka (45), and in Zagreb (40).
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.