The German population was expelled in accordance with the Potsdam Agreement and replaced with mostly Russian settlers, with the Soviet portion of the former province of East Prussia being organized into Kaliningrad Oblast. In 1946 the name was changed to its current name Zheleznodorozhny. After the collapse of the Soviet Union in 1991, Zheleznodorozhny became a part of the Russian Federation.
The German populace was forcibly relocated in accordance with the Potsdam Agreement and replaced with predominantly Russian settlers, with the Soviet portion of the former East Prussian province being reorganized into Kaliningrad Oblast. In 1946, the name was altered to its current designation Zheleznodorozhny. Following the dissolution of the Soviet Union in 1991, Zheleznodorozhny became a constituent part of the Russian Federation.