In Croatia, Kertez families are Croats (from Djurdjevac area ). In the past century, relatively most of Croatian residents bearing this family name were born in Djurdjevac area and in Koprivnica.
Prevalence
About 40 people with faimily name Kertez live in Croatia today, in 19 households. There were 60 of them in the middle of the past century, and their number decreased by 30 percent. They are located in 6 Croatian counties, in 6 cities and four other places, mostly in Koprivnica (10), in Otocka (<10), Gola (<10) and Novacka (<10) in Djurdjevac area, and in Zagreb (<10).
Outside Croatia
Family name Kertez is present in 6 countries on two continents. The family name "Kertez " is used by small number of people in Hungary , small number in the United States , and small number of people in France.
