In Croatia, Ćoja families are Croats (from Knin area ). In the past century, relatively most of Croatian residents bearing this family name were born in North Herzegovina (Konjic area) and in Bosanian Posavina (Bosanska Gradiska area). In Buturović Polje in North Herzegovina every third inhabitant had the family name Ćoja.
Prevalence
About 10 people with faimily name Ćoja live in Croatia today, in 6 households. They are located in 6 Croatian counties, four cities and four other places, mostly in Zagreb (<10), Tenja (<10), Boljenovici on the Peljesac peninsula (<5), Pula (<5), and in Ston on the Peljesac peninsula (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1938 in source Emigration Commission Zagreb.