Tumkur district is an administrative district in the state of Karnataka in India. Formerly the part of old Mysore State.Formed in the year 1832 during the days of British commissioner of Mysore Sir Mark Cubbon as Chitaldroog Division including the area of present Chitradurga and Tumkur districts headquartered at Tumkur, Major General Rechard Stewart Dobbs was the first collector of the district (term of office 1835-1861),who was key responsible for the establishment of Munro syestem of adminstration . In the year 1862 Chitaldroog division was abolished and Tumkur (Nandidroog division) and chitradurga (Nagar Division) established as separate districts by Lewin Bentham Bowring. The district headquarters are located at Tumkur. The district occupies an area of 10,598 km² and had a population of 2,584,711, of which 19.62% were urban as of 2001. It is a one and a half hour drive from Bangalore, the capital of Karnataka.The district is known for the production of Coconut, is called as 'Kalpataru Nadu'.It is the only discontiguous district in Karnataka(Pavagada Taluk has no Geographical continuity with rest of the District)