Komsomolsk-on-Amur is a city in Khabarovsk Krai, Russia, located on the west bank of the Amur River in the Russian Far East. It is located on the Baikal-Amur Mainline, 356 kilometers northeast of Khabarovsk. Population: 238,505 ; 263,906 ; 281,035 ; 315,325.