Shimla district, known as Simla district until 1972, is one of the twelve districts of the state of Himachal Pradesh in northern India. Its headquarters is the state capital of Shimla. Neighbouring districts are Mandi and Kullu in the north, Kinnaur in the east, Uttarakhand in the southeast, Solan to the southwest and Sirmaur in the south. The elevation of the district ranges from 987 metres to 4,500 metres.