Nonković families are mainly Serbs and they are mostly from Vinkovci area , whereas often Croats (from Zadar). In the past century, relatively most of Croatian residents bearing this family name were born in Knin and in Vinkovci area.
About 130 people with faimily name Nonković live in Croatia today, in 60 households. There were 180 of them in the middle of the past century, and their number decreased by 30 percent. They are located in 10 Croatian counties, in 13 cities and 16 other places, mostly in Zagrovic (30), Stari Jankovci in Vinkovci area (15), Zadar (10), Rijeka (<10), and in Split (<10).
Family name Nonković is present in 8 countries on three continents. The family name "Nonkovic " is used by small number of people in the United States.