Polessk is a town and the administrative center of Polessky District in Kaliningrad Oblast, Russia, located 49 kilometers northeast of Kalinin…Polessk is a town and the administrative center of Polessky District in Kaliningrad Oblast, Russia, located 49 kilometers northeast of Kaliningrad, the administrative center of the oblast, at the junction of a main road and a railroad at the Deyma River, shortly before it enters the Curonian Lagoon. Population figures: 7,581 ; 7,681 ; 6,859 ; 4,744.