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 Genaral R S Dobbs was the first British superintendent of the district (term of office 1832-1861). In the year 1862 Chitaldroog division was abolished and Tumkur (Nandidroog division) and chitradurga (Nagar Division) established as separate districts during the British commissioner of Mysore 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 consists chiefly of elevated land intersected by river valleys. A range of hills rising to nearly 4,000 feet (1,200 m) crosses it from north to south, forming the watershed between the systems of the Krishna and the Kaveri. The principal streams are the Jayamangala and the Shimsha. The mineral wealth of Tumakuru is considerable; iron is obtained in large quantities from the hillsides; and excellent building-stone is quarried. The slopes of the Devarayanadurga hills are clothed with forests. Wildlife such as leopards, bears and wild boar have been recorded here. Although, tigers have been recorded from these forests as late as the 1950s, most recent reports are of stray sightings and need confirmation. The annual rainfall averages 39 inches.
According to the 2011 census Tumakuru district has a population of 2,678,980, roughly equal to the nation of Kuwait or the US state of Nevada. According to this census, 24,13,812 are Hindus (90.10%), 2,45,923 are Muslims (9.18%) 9130 are Christians (0.34%), 5067(0.19%) are Jains. This gives it a ranking of 150th in India (out of a total of 640). The district ranked 4th place in terms of population in Karnataka after Bengaluru, Belgaum and Mysore. The district has a population density of 253 per square km . Its population growth rate over the decade 2001-2011 was 3.74%. Tumakuru has a sex ratio of 984 females for every 1000 males, and a literacy rate of 75.14%.
Tumakuru is a good study center from primary education to higher education. It has its own university. Within this town, there are seven technology institutions, one medical institution and one dental institution.
Dr. Nazeer Ahmed, Former NASA Scientist, Philanthropist & Ex-MLA
G. S. Paramasivaiah, Student of the Nobel-laureate Sir CV Raman was the first Principal of the Karnatak Science College, Dharwad. He was also the Secretary of KLE Society Belgaum and played an important role in founding of Karnatak University.