Dehradun district is a district of Uttarakhand state in northern India. The district headquarters is Dehradun, which has also served as the provisional capital of Uttaranchal since its founding in 2000. The district has 6 tehsils, 6 community development blocks, 17 towns and 764 inhabited villages, and 18 unpopulated villages. As of 2011 it is the second most populous district of Uttarakhand (out of 13), after Haridwar. Dehradun district also includes the prominent towns of Rishikesh, Mussoorie, Landour and Chakrata. The district stretches from the Ganges river in the east to the Yamuna river in the west, and from the Terai and Shivaliks in the south and southeast to the Great Himalaya in the northwest.
Dehradun includes various Puranic stories and cultures. It is mentioned in the Ramayana that Lord Rama, along with brother Lakshmana, came to the area after defeating Ravana, the Rakshasa king of Lanka. The area is also linked to Dronacharya, the guru of the Kauravas and Pandavas in the Mahabharata. The area of Rishikesh is mentioned in the Skanda Purana as having been given to rishis(sages) by Lord Vishnu after killing the asuras Madhu-Kaitabh and their companions who tormented the rishis. Ancient temples, statues and archaeological remains have been found at the sites in and around the area that are mentioned in the Ramayana and the Mahabharata. These remains have been dated to be approximately 2000 years old.
As of 2011 Indian census provisional figures, the Dehradun district has a population of 16,98,560 the second highest in Uttarakhand after Haridwar (19,27,029). The Decadal growth rate has jumped up from 25% (1991–2001) to 32.48% (2001–2011). This is the third highest in Uttarakhand after Haridwar (33.16%) and Udham Singh Nagar (33.40%). The district has a gender ratio of 902 as against a state average of 963. This has however improved from 887 in the 2001 census. The population density is 550, again the 3rd highest after Haridwar(817) and Udham Singh Nagar (648). The state average is 189. The literacy rate is the highest in the state at 85.24% (90.32 for males, 79.61 for females)
Dehradun district is a part of Garhwal region, therefore local culture is dominant in the district. Apart from Garhwali, other languages spoken in the region are Hindi and English. People from different religions stay together in harmony and peace. Owing to improved education system, proper transport and good communication system, development of this region has gained appreciable pace. Dehradun is home for many prominent schools in the country. Blue buses are the main way of transport in the city.