In Croatia, Koci families are generally Albanians (from Kosovo ), very rarely Croats (from Zagreb ). In the past century, relatively most of Croatian residents bearing this family name were born in Kosovo and in Zagreb.
Prevalence
About 20 people with faimily name Koci live in Croatia today, in 6 households. They are located in one Croatian city only, in Zagreb (25).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1923 in source Emigration Commission Zagreb.