Otwock County is a unit of territorial administration and local government (powiat) in Masovian Voivodeship, east-central Poland. It came into being on January 1, 1999, as a result of the Polish local government reforms passed in 1998. Its administrative seat and largest town is Otwock, which lies 22 kilometres (14 mi) south-east of Warsaw. The county also contains the towns of Józefów, lying 3 km (2 mi) north-west of Otwock, and Karczew, 4 km (2 mi) south of Otwock.