Panchkula district was formed as the 17th district of Haryana state in India on 15 August 1995. It comprises two sub divisions and two tehsils: Panchkula and Kalka. It has 264 villages out of which twelve are un-inhabited and ten wholly merged with towns or treated as census towns according to the 1991 census. There are five towns in the district: Barwala, Kalka, Panchkula, Pinjore and Raipur Rani. The total population of the district is 319,398 out of which 173,557 are males and 145,841 are females.
As of the 2011 Census of India, it was the least populous district of Haryana.
Panchkula city is the headquarters of this district. Chandimandir Cantonment is located in this district, adjoining the Panchkula Urban Estate.