 Wieluń County is bordered by Sieradz County to the north, Łask County to the north-east, Bełchatów County and Pajęczno County to the east, Kłobuck County to the south-east, Olesno County to the south, and Wieruszów County to the west.The county is subdivided into 10 gminas (one urban-rural and nine rural).These are listed in the following table, in descending order of population.