In Croatia, Koprenica families are mainly Croats (from Karlovac ), equally Serbs. In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and in Duga Resa area. In Vojnović Brdo in Duga Resa area every ninth inhabitant had the family name Koprenica.
Prevalence
About 10 people with faimily name Koprenica live in Croatia today, in 6 households. There were 10 of them in the middle of the past century, and their number remains constant. They are located in three Croatian cities only: in Zagreb (<10), Karlovac (<10), and in Rijeka (<5).
Outside Croatia
Family name Koprenica is present in three countries on two continents. The family name "Koprenica " is used by few people in the United States.