Zelenogradsk is a town and the administrative center of Zelenogradsky District in Kaliningrad Oblast, Russia, located 34 kilometers north of Kaliningrad, on the Sambian coastline near the Curonian Spit on the Baltic Sea. Population: 17,296 ; 13,026 ; 12,509 ; 10,786 . In its heyday, Zelenogradsk was a popular seaside resort on Germany's eastern Baltic coast, comparable to Bognor Regis in England.