In Croatia, Đaja families are Croats (from Zupanja area ). In the past century, relatively most of Croatian residents bearing this family name were born in Zupanja area.
Prevalence
Only a few people with faimily name Đaja live in Croatia today, in two households only. There were 40 of them in the middle of the past century, and their number decreased significantly. They are located in only threee Croatian places: in Visnjevac (<5), Babina Greda in Zupanja area (<5), and in Mala Mlaka (<5).