In Croatia, Civaj families are Croats (from Nasice area ). In the past century, relatively most of Croatian residents bearing this family name were born in Nasice and in Bosanian Posavina (Derventa area).
Prevalence
Only a few people with faimily name Civaj live in Croatia today, in two households only. They are located in only two Croatian places: in Nasicko Novo Selo (<5) and Djurdjenovac (<5) in Nasice area.