Bagrationovsk (Russian: Багратио́новск; German: Preußisch Eylau; Lithuanian: Ylava or Prūsų Ylava; Polish: Pruska Iława or Iławka) is a town and the administrative center of Bagrationovsky District of Kaliningrad Oblast, Russia, located 37 kilometers (23 mi) south of Kaliningrad. Population: 6,399 (2010 Census preliminary results); 7,216 (2002 Census); 6,728 (1989 Census).