Eržić families are Croats and they are mostly from Zupanja area. In the past century, relatively most of Croatian residents bearing this family name were born in Djakovo and in Zupanja area.
Prevalence
About 90 people with faimily name Eržić live in Croatia today, in 40 households. There were 90 of them in the middle of the past century, and their number remains constant. They are located in 7 Croatian counties, in 11 cities and 6 other places, mostly in Bosnjaci in Zupanja area (20), Osijek (20), Vuka in Djakovo area (15), Ilok (10), and in Siroko Polje (<10).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1917 in source List of Dignitaries, Officials and Public Servants of the Kingdom of Croatia-Slavonia.