Kosumce

Kosumce is a village in the administrative district of Gmina Karczew, within Otwock County, Masovian Voivodeship, in east-central Poland. It lies approximately 12 km south of Karczew, 15 km south of Otwock, and 32 km south-east of Warsaw. As of 2007, the village had a population of approximately 280.

From 1975 to 1998 Kosumce was in Warsaw Voivodeship. Voivodeship Road 799 runs through the village.

Neighbouring villages include Dziecinów, Ostrówek and Piotrowice.