In Croatia, Korpak families are almost entirely Croats (from Nasice ), very rarely Slovaks (also from Nasice ). In the past century, relatively most of Croatian residents bearing this family name were born in Nasice and Osijek.
Prevalence
About 40 people with faimily name Korpak live in Croatia today, in 13 households. There were 20 of them in the middle of the past century, and their number doubled. They are located in two Croatian counties, threee cities and 5 other places, mostly in Visnjevac (<10), Nasice (<10), Osijek (<10), Markovac Nasicki (<5), and in Jelisavac (<5).