In Croatia, Cocaj families are predominantly Albanians (from Rijeka area ), rarely Croats (from Rijeka ). In the past century, relatively most of Croatian residents bearing this family name were born in Kosovo.
Prevalence
About 10 people with faimily name Cocaj live in Croatia today, in two households only. They are located in only threee naselja i to in Buzdohanj in Rijeka area (<10), Rijeka (<5), and in Varazdin (<5).