From the Wikipedia page 
Piotrków County (Polish: powiat piotrkowski) is a unit of territorial administration and local government (powiat) in Łódź Voivodeship, 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 is the city of Piotrków Trybunalski, although the city is not part of the county (it constitutes a separate city county). The only towns in Piotrków County are Sulejów, which lies 15 km (9 mi) east of Piotrków Trybunalski, and Wolbórz (classed as a town since 1 January 2011).
Apart from the city of Piotrków Trybunalski, Piotrków County is also bordered by Łódź East County to the north, Tomaszów Mazowiecki County and Opoczno County to the east, Radomsko County to the south, Bełchatów County to the west, and Pabianice County to the north-west.