Akhtubinsk is a town and the administrative center of Akhtubinsky District in Astrakhan Oblast, Russia, located on the left bank of the Akhtuba …Akhtubinsk is a town and the administrative center of Akhtubinsky District in Astrakhan Oblast, Russia, located on the left bank of the Akhtuba River, 292 kilometers north of Astrakhan, the administrative center of the oblast. Population: 41,853 ; 45,542 ; 50,261 ; 30,000.