Ostrovskoye (Russian: Остро́вское) is a rural locality (a settlement) and the administrative center of Ostrovsky District, Kostroma Oblast, Russia.
Population: 4,218 (2021 Census);[1] 5,042 (2010 Census);[2] 5,273 (2002 Census);[3] 5,388 (1989 Soviet census).
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