Since then, the town shared the fate of the nearby city of Warsaw, located only 25 kilometers (16 mi) away.

During the January Uprising, on July 30, 1863, a skirmish between Polish insurgents and Russian soldiers took place there.

Russian soldiers surrounded a Polish insurgent unit, but after a short battle the Poles managed to break through the encirclement and escape towards Kałuszyn.

During the Polish–Soviet War, in August 1920, it was the site of the Battle of Radzymin (1920), in which Poles defeated the invading Russians.

Following the joint German-Soviet invasion of Poland, which started World War II in September 1939, the town was occupied by Germany.