In Croatia, Prokopec families are generally Croats (from Ilok ), barely Slovenes (from Samobor ), and . In the past century, relatively most of Croatian residents bearing this family name were born in Ilok and in Djakovo area.
Prevalence
About 40 people with faimily name Prokopec live in Croatia today, in 20 households. There were 50 of them in the middle of the past century, and their number decreased by 10 percent. They are located in 6 Croatian counties, in 9 cities and 5 other places, mostly in Zagreb (15), Bapska (10), Bilje in Osijek area (<10), Osijek (<5), and in Djakovo (<5).
Outside Croatia
Family name Prokopec is present in 21 countries worldwide. The family name "Prokopec " is used by some 500 people in Czech Republic , about 200 in Germany , and some 100 people in the United States.
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.