In Croatia, Đerđa families are Croats (from Zadar area ). In the past century, relatively most of Croatian residents bearing this family name were born in Zadar and in Zadar area.
Prevalence
About 50 people with faimily name Đerđa live in Croatia today, in 30 households. There were 30 of them in the middle of the past century, and their number increased by 60 percent. They are located in 6 Croatian counties and two other places, mostly in Zemunik Donji in Zadar area (25), Zadar (15), Rijeka (10), Zagreb (<10), and in Krapinske Toplice in Krapina area (<5).
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.