Slavsky District is an administrative district (raion), one of the fifteen in Kaliningrad Oblast, Russia. As a municipal division, it is incorporated as Slavsky Municipal District. It is located in the northern and central parts of the oblast. The area of the district is 1,349 square kilometers (521 sq mi). Its administrative center is the town of Slavsk. Population: 21,015 (2010 Census); 21,918 ; 20,864 (1989 Soviet census). The population of Slavsk accounts for 22.0% of the district's total population.