The district includes Mohali, Kharar and Dera Bassi Teshils. It is located in the north east part of Punjab. and is part of Rupnagar division. The District includes 383 villages. The important township in the district are Kharar, Kurali, Mohali, Zirakpur & Dera Bassi. Kharar block is the largest administrative unit of the district with 138 villages followed by Majri block with 116 villages and Derabassi block with 102 villages.27 villages were newly added in the District Sahibzada Ajit Singh Nagar which were carved out from District Patiala.