From the Wikipedia page 
Dzierżoniów County (Polish: powiat dzierżoniowski) is a unit of territorial administration and local government (powiat) in Lower Silesian Voivodeship, south-western Poland. It came into being on January 1, 1999, as a result of the Polish local government reforms passed in 1998. Its administrative seat is the town of Dzierżoniów, and it also contains four other towns: Bielawa, Niemcza, Pieszyce and Piława Górna. The county covers an area of 478.3 square kilometres (184.7 sq mi).
Dzierżoniów County is bordered by Świdnica County to the north, Wrocław County to the north-east, Strzelin County to the east, Ząbkowice Śląskie County to the south-east, Kłodzko County to the south and Wałbrzych County to the west.