In 1941, the Nazis created a ghetto in Nowy Dwór Mazowiecki, located in the area of streets: Nałęcza, Warszawska, Mazowiecka i Piaskowa. Its area was surrounded by a fence topped with barbed wire. People of Jewish origin from Nowy Dwór Mazowiecki and settlers from Czerwińsk, Wyszogród, Zakroczym and other locations were crowded in the ghetto. Some of them were deported to the nearby camp in Pomiechówek. The liquidation of the ghetto took place in November/December 1942 - its inhabitants, in a few rounds, were deported to Auschwitz.