Solan district is one of the twelve districts of the Himachal Pradesh state in northern India. The city of Solan is the administrative headquarters of the district. The district occupies an area of 1936 km2.

Solan is a city in the Indian state of Himachal Pradesh and the district headquarters of Solan district. It is located 45.5 kilometres (28 mi) south of the state capital, Shimla. Solan has an average elevation of 1,550 metres (5,090 ft). The city is situated between Chandigarh and Shimla on the Kalka-Shimla National Highway-5. The narrow-gauge Kalka-Shimla railway passes through Solan. Located on the Punjab-Himachal Border, Solan is nestled in the Shivalik hills of the Himalayas.