From the Wikipedia page 
Opoczno County (Polish: powiat opoczyński) is a unit of territorial administration and local government (powiat) in Łódź Voivodeship, south-east 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 Opoczno, which lies 72 kilometres (45 mi) south-east of the regional capital Łódź. The only other town in the county is Drzewica, lying 15 km (9 mi) north-east of Opoczno.