Kostki [ˈkɔstki] is a village that is located in the administrative district of Gmina Sokołów Podlaski, within Sokołów County, Masovian Voivodeship, in east-central Poland.

[1] It lies approximately 10 kilometres (6 mi) north-west of Sokołów Podlaski and 86 km (53 mi) east of Warsaw.

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