In Croatia, Doboj families are Croats (from Koprivnica area ). In the past century, relatively most of Croatian residents bearing this family name were born in Koprivnica area. In Sokolovac in Koprivnica area every eightieth inhabitant had the family name Doboj.
Prevalence
About 10 people with faimily name Doboj live in Croatia today, in one household only. There were 10 of them in the middle of the past century, and their number remains constant. They are located in only one small Croatian place, in Sokolovac in Koprivnica area (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.