In Croatia, Djetka families are Serbs. In the past century, relatively most of Croatian residents bearing this family name were born in Backa, Vojvodina.
Prevalence
Only a few people with faimily name Djetka live in Croatia today, in one household only. They are located in one Croatian city only, in Osijek (<5).
Outside Croatia
Family name Djetka is present in four countries on two continents.
In the sources analysed in the project Acta Croatica so far, the name is mentioned over five times, the first time 1917 in source List of Dignitaries, Officials and Public Servants of the Kingdom of Croatia-Slavonia.