In Croatia, Kopf families are almost entirely Croats (from Osijek ), very rarely Serbs. In the past century, relatively most of Croatian residents bearing this family name were born in Osijek and Valpovo.
Prevalence
About 30 people with faimily name Kopf live in Croatia today, in 16 households. There were 50 of them in the middle of the past century, and their number decreased by 30 percent. They are located in four Croatian counties and two other places, mostly in Osijek (15), Valpovo (<10), Aljmas in Vinkovci area (<5), Vukovar (<5), and in Zagreb (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1917 in source List of Dignitaries, Officials and Public Servants of the Kingdom of Croatia-Slavonia.