Sobienie Kiełczewskie Pierwsze is a village in Otwock County, Gmina Sobienie-Jeziory.The population is near 200. In the village is Voivodship Road 801. It lies approximately south-east of Sobienie-Jeziory, south of Otwock, and south-east of Warsaw. From 1975 to 1998 this village was in Siedlce Voivodeship. Villages in Otwock County