In Croatia, Zerdin families are Croats (from Pakrac ). In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and Grubisno Polje.
Prevalence
About 10 people with faimily name Zerdin live in Croatia today, in three households only. There were 10 of them in the middle of the past century, and their number remains constant. They are located in three Croatian cities only: in Bjelovar (<10), Koprivnica (<10), and in Pakrac (<5).
Outside Croatia
Family name Zerdin (including: Zherdin , Zserdin ) is present in 16 countries worldwide. "Zserdin " is used by small number of people in the United States and small number in Austria.
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.