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.