In Croatia, Čopac families are Croats (from Omis area ). In the past century, relatively most of Croatian residents bearing this family name were born in Split and in Omis area.
Prevalence
About 50 people with faimily name Čopac live in Croatia today, in 19 households. There were 30 of them in the middle of the past century, and their number increased by 50 percent. They are located in only four naselja i to in Dugi Rat in Omis area (45), Split (<10), Jesenice in Omis area (<5), and in Omis (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 2007 in source Encyclopaedia of Croatian Surnames.