Kostarevo (Russian: Костарево) is a rural locality (a selo) and the administrative center of Kostarevskoye Rural Settlement, Kamyshinsky District, Volgograd Oblast, Russia.

[3] Kostarevo is by road on the Volga Upland, on the Ilovlya River, 35 km west of Kamyshin (the district's administrative centre).

Petrunino is the nearest rural locality.

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