Garwolin County is a unit of territorial administration and local government (powiat) in Masovian Voivodeship, east-central Poland. It came into being on 1 January 1999, as a result of the Polish local government reforms passed in 1998. Its administrative seat and largest town is Garwolin, which lies south-east of Warsaw. The county contains three other towns: Laskarzew, south of Garwolin, Pilawa, north-west of Garwolin, and Zelechów, south-east of Garwolin.