Kostrzyn is a village in the administrative district of Gmina Wyśmierzyce, within Białobrzegi County, Masovian Voivodeship, in east-central Poland.
History Kostrzyn was a private village of Polish nobility, administratively located in the Radom County in the Sandomierz Voivodeship in the Lesser Poland Province. In 1827, the village had a population of 85.
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