Kopljar families are Croats and they are mostly from Djakovo area. In the past century, relatively most of Croatian residents bearing this family name were born in Osijek and in Bosanian Posavina (Derventa area).
Prevalence
About 140 people with faimily name Kopljar live in Croatia today, in 60 households. There were 120 of them in the middle of the past century, and their number increased by 10 percent. They are located in 10 Croatian counties, in 12 cities and 10 other places, mostly in Zagreb (45), Vuka in Djakovo area (30), Sesvete (20), Osijek (10), and in Slavonski Brod (<10).
Outside Croatia
Family name Kopljar is present in 7 countries on two continents.
In the sources analysed in the project Acta Croatica so far, the name is mentioned over five times, the first time 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.