Stefanków is a village in the administrative district of Gmina Chlewiska, within Szydłowiec County, Masovian Voivodeship, in east-central Poland.
History Within the Polish Kingdom, the village was administratively located in the Sandomierz Voivodeship in the Lesser Poland Province of the Polish Crown.
In 1827, it had a population of 101.
During the German occupation of Poland (World War II), on March 29, 1940, the Germans murdered 69 Poles from Stefanków in a massacre committed in the Firlej district in the city of Radom (see Nazi crimes against the Polish nation).
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