Slavsk is a town located in the Kaliningrad Oblast of Russia. It serves as the administrative center of the Slavsky District and is situated approximately 105 kilometers (65 mi) northeast of the regional capital, Kaliningrad.
According to census data, the population of the town has fluctuated over recent decades. The 2010 census recorded a population of 4,614 residents, following a count of 5,172 in 2002 and 4,682 during the 1989 Soviet census.