Sebezh is a town and the administrative center of Sebezhsky District in Pskov Oblast, Russia, located in a picturesque setting between Lakeā¦Sebezh is a town and the administrative center of Sebezhsky District in Pskov Oblast, Russia, located in a picturesque setting between Lakes Sebezhskoye and Orono 189 kilometers south of Pskov, the administrative center of the oblast. Population: 6,375 ; 7,138 ; 9,497.